Date   

Re: Wed Nite Nets

Johnny AC0BQ
 

Ge Wayne 
That would work.
72
Johhhny


On Friday, December 27, 2013, Wayne Dillon wrote:
 

Perhaps we should ask if there are any stations with QSP's for the net?
Wayne - KC0PMH


On Fri, Dec 27, 2013 at 11:20 AM, AG1P - Ron <ag1p@...> wrote:
 

That will work assuming the distant station can hear net control.  I remember participating in a phone net when my QTH was CT.  Might have been ECARS.  After he took all check-ins, net control would ask if any relays, and then asked farthest west station to call for check-ins and usually gathered in a few more people.  Helped keep interest in the net and more people over wider area could participate.  It was also good practice for difficult times when relays can really make a difference.

 

72 - Ron

 

From: 4sqrp@... [mailto:4sqrp@...] On Behalf Of WA0ITP
Sent: Friday, December 27, 2013 7:09 AM
To: 4sqrp@...
Subject: Re: [4sqrp] Re: Wed Nite Nets

 

 

I'll do the same. I know there have been times that Bart couldn't make it into the 40M net.  This should work for him as well.  Hope that that Ron and others can make it in this way. 
----------------------------------
Back to the bench, Winter's too valuable to waste.
I love this radio stuff !
72   WA0ITP
www.wa0itp.com
www.4sqrp.com

 

 
 

----- Original Message -----

From: Wayne Dillon

To: 4sqrp@... ; Steve Sellmeyer

Sent: Friday, December 27, 2013 8:54 AM

Subject: Re: [4sqrp] Re: Wed Nite Nets

 

Hi Steve and the rest of the gang,

That would suite me, I'll could just send "any relays?" or "any QSP?" and see what turns up. Either way I'm willing to go along with the group consensus. As you say 40 in the evenings has been poor (and that's being generous!) so if we're all in agreement I'll begin that regime next Wednesday (I'll send "any QSP?" when we're all done with the checkins that can make it unassisted).

72/3 es God Bless de Wayne - KC0PMH

 

On Fri, Dec 27, 2013 at 8:45 AM, Steve Sellmeyer <



--
QRP....."more smiles per watt"


Re: Frequency adjustment on a simple cw transmitter

James Compton
 

Todd,
Great information!  I've been researching low-pass filters to try to determine the capacitor and inductor values as well as the primary filter designs.  The online calculators for the various filter design components are a little too complex for me to be confident in actually building one from scratch.  I've found a couple of filters on the internet that have component values for various bands. 
http://www.gqrp.com/technical2.htm
 I've been looking at these because of a schematic floating around for an extremely simple qrp transmitter, the Michigan Mighty Mite, that would have to have a filter added before it is useable.  One thing leads to another and I develop a curiosity about the subject and start reading about things that I previously knew nothing about.   I guess that's the essence of ham radio....
http://makerf.com/posts/mighty_simple_shortwave_transmitter
I've corresponded with a technician at Elecraft who has been very generous with his time and taught me a lot about using my oscilloscope and discussed what to look for in a spectrum analyzer.  I hope to buy one some day, but the expense is prohibitive right now.  It's been nice having someone who knows tell me what is and is not important when I look at them.
I'll look at the "Chat With the Designers" series that you recommend as well as the imbedded links in you email.  Sounds like exactly the type of information sources I need.
Thanks again for the information!
Jim Compton, K4JDC



-----Original Message-----
From: "Todd F. Carney / K7TFC"
Sent: Dec 27, 2013 3:07 PM
To: 4sqrp@..., Jim Compton
Subject: Re: [4sqrp] Frequency adjustment on a simple cw transmitter

Jim,

Sounds like a fun project. Regarding the output filter, one usually tries
to choose the cap and coil values to cut-off (roll off, actually) emissions
from just above the band the rig is designed for. In other words, it's a
*low-pass* filter. There are a few experimenters who can actually measure
the harmonic content of the signal being put out, but generally, that
requires a spectrum analyzer--a very expensive piece of equipment.

Others may disagree, but a large number of designers/experimenters design
the output-filter network (sometimes called a pi network) such that the
harmonics will be well below FCC requirements. In other words, they rely on
the design parameters rather than actually testing. I think most designers
are fond of *Chebyshev*-type filter designs because they have a steep roll
off rather than the more gradual roll of other designs.

There have been a few efforts at making rather crude harmonic measurements
with simple home-brewed instruments that apply a notch filter at the
operating frequency--cutting it off as sharply as possible--and then
measure the power of whatever else made it through the notch--presumably
mostly harmonics (they're always *above* the fundimental). Here one such
device: http://www.cwtd.org/May1.html.

By the way, the entire series of weekly (then biweekly) sessions in the
"Chat with the Designers" series put on by N2APB and N2CX are fabulous for
beginners or anyone else for that matter. So in addition to the one I just
cited, check out their three-part series on the design of low-pass filters
for transmitter outputs. http://www.cwtd.org has links to all the sessions.
Each session has a "white-board" page and a link to the mp3 of the session.
Great stuff!

73,

Todd
------------------------------------------------------------------------------------
K7TFC / Medford, Oregon, USA / CN82ni / UTC-
8
(P
S
T)
------------------------------------------------------------------------------------


Re: LOOKING FOR: 4SQRP SS-40

Jim Kortge
 

On 12/27/2013 3:59 PM, cbayona wrote:
80M or 30M either one will entail a lot of changes a possibly some
custom crystals for the LO but I have way too many 40M radios, it
would be nice to have something different.
Actually, an SS-40 can be put on 30 meters with a change in the VXO crystals to 16.384 MHz, a standard computer crystal value and the IF changed to 6.250 MHz, also a standard computer crystal value. It would nominally tune from 10.130 down to 10.1 MHz Of course, the front-end needs to be changed, but that only entails frequency scaling of the LC components. The input and output impedance of the IF filter at 6.250 MHz would require changes in the values around the LT1253, but those can be determined using the AADE Filter program with the correct crystal parameters plugged in. If there is enough interest, some of us could even work out those details.

So, how much interest is there in doing it?

72,

Jim, K8IQY



At 02:02 PM 12/27/2013, you wrote:


I'm thinking that for 30m it would be a major re-work?
God Bless de Wayne - KC0PMH


On Fri, Dec 27, 2013 at 1:54 PM, cbayona
<<mailto:@k5nwa>@k5nwa> wrote:


I'm hoping that the kits will be available soon. I have one and it
works well, I would like to build one for 30M.

At 12:45 PM 12/27/2013, you wrote:
I am looking for a SS-40 receiver either still in kit form, or
assembled. If anyone has one laying around they don't want, pls let me know.

Thanks
Marshall Dias
W0OTM

--
<http://www.qsl.net/kc0pmh/>http://www.qsl.net/kc0pmh/ Under
construction but please visit anyway.

QRP - EFFICIENCY AND SKILL, NOT POWER.

I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17

<http://www.4sqrp.com/index.php>http://www.4sqrp.com/index.php

4 State QRP Group NCS - 40m & 160m
4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155C
SOC #848
30MDG#1176
NEQRP #693
GORC #192
DMC (Digital Modes Club) # 06686


Re: LOOKING FOR: 4SQRP SS-40

Paul Smith
 

Marshall, I have an SS 40 built in a ten tec tp41 case.... The metal work is poor...The rx works good... I will ship for 45$
Your MB kit went out a while ago.....

de Paul Smith N0NBD

Sent from my iPad

On Dec 27, 2013, at 12:45 PM, W0OTM <w0otm@...> wrote:

 

I am looking for a SS-40 receiver either still in kit form, or assembled. If anyone has one laying around they don't want, pls let me know.

Thanks
Marshall Dias
W0OTM


Re: LOOKING FOR: 4SQRP SS-40

cbayona <CBayona@...>
 

80M or 30M either one will entail a lot of changes a possibly some custom crystals for the LO but I have way too many 40M radios, it would be nice to have something different.

At 02:02 PM 12/27/2013, you wrote:


I'm thinking that for 30m it would be a major re-work?
God Bless de Wayne - KC0PMH


On Fri, Dec 27, 2013 at 1:54 PM, cbayona <<mailto:@k5nwa>@k5nwa> wrote:


I'm hoping that the kits will be available soon. I have one and it
works well, I would like to build one for 30M.

At 12:45 PM 12/27/2013, you wrote:
I am looking for a SS-40 receiver either still in kit form, or
assembled. If anyone has one laying around they don't want, pls let me know.

Thanks
Marshall Dias
W0OTM

--
<http://www.qsl.net/kc0pmh/>http://www.qsl.net/kc0pmh/ Under construction but please visit anyway.

QRP - EFFICIENCY AND SKILL, NOT POWER.

I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17

<http://www.4sqrp.com/index.php>http://www.4sqrp.com/index.php

4 State QRP Group NCS - 40m & 160m
4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155C
SOC #848
30MDG#1176
NEQRP #693
GORC #192
DMC (Digital Modes Club) # 06686

--
Cecil - k5nwa
< http://thepartsplace.k5nwa.com/ > < http://www.softrockradio.org/ >

Never take life seriously. Nobody gets out alive anyway.


Re: LOOKING FOR: 4SQRP SS-40

Sid Leben <sid@...>
 

Marshall,
I have the SS-40, NS-40 & Magic Box, all assembled in TenTec cases..  All working…
They are looking for a new home.
Please contact me off list.
Sid  KC2EE
Sid@...

From: W0OTM <w0otm@...>
Reply-To: "4sqrp@..." <4sqrp@...>, W0OTM <w0otm@...>
Date: Fri, 27 Dec 2013 10:45:55 -0800
To: "4sqrp@..." <4sqrp@...>
Subject: [4sqrp] LOOKING FOR: 4SQRP SS-40

 

I am looking for a SS-40 receiver either still in kit form, or assembled. If anyone has one laying around they don't want, pls let me know.

Thanks
Marshall Dias
W0OTM


Re: Frequency adjustment on a simple cw transmitter

Todd K7TFC
 

Jim,

Sounds like a fun project. Regarding the output filter, one usually tries to choose the cap and coil values to cut-off (roll off, actually) emissions from just above the band the rig is designed for. In other words, it's a low-pass filter. There are a few experimenters who can actually measure the harmonic content of the signal being put out, but generally, that requires a spectrum analyzer--a very expensive piece of equipment. 

Others may disagree, but a large number of designers/experimenters design the output-filter network (sometimes called a pi network) such that the harmonics will be well below FCC requirements. In other words, they rely on the design parameters rather than actually testing. I think most designers are fond of Chebyshev-type filter designs because they have a steep roll off rather than the more gradual roll of other designs. 

There have been a few efforts at making rather crude harmonic measurements with simple home-brewed instruments that apply a notch filter at the operating frequency--cutting it off as sharply as possible--and then measure the power of whatever else made it through the notch--presumably mostly harmonics (they're always above the fundimental). Here one such device: http://www.cwtd.org/May1.html

By the way, the entire series of weekly (then biweekly) sessions in the "Chat with the Designers" series put on by N2APB and N2CX are fabulous for beginners or anyone else for that matter. So in addition to the one I just cited, check out their three-part series on the design of low-pass filters for transmitter outputs. http://www.cwtd.org has links to all the sessions. Each session has a "white-board" page and a link to the mp3 of the session. Great stuff!

73,

Todd
------------------------------------------------------------------------------------
K7TFC / Medford, Oregon, USA / CN82ni / UTC-
8
 (P
S
T)
------------------------------------------------------------------------------------



Re: LOOKING FOR: 4SQRP SS-40

Wayne Dillon
 

I'm thinking that for 30m it would be a major re-work?
God Bless de Wayne - KC0PMH


On Fri, Dec 27, 2013 at 1:54 PM, cbayona <CBayona@...> wrote:
 

I'm hoping that the kits will be available soon. I have one and it
works well, I would like to build one for 30M.

At 12:45 PM 12/27/2013, you wrote:
>I am looking for a SS-40 receiver either still in kit form, or
>assembled. If anyone has one laying around they don't want, pls let me know.
>
>Thanks
>Marshall Dias
>W0OTM
>
>------------------------------------
>
>4SQRP Website: http://4sqrp.com
>OzarkCon is coming April 4-5, 2014 in Branson, MO
>View Details at http://www.ozarkcon.com/index.phpYahoo Groups Links
>
>
>
--
Cecil - k5nwa
< http://thepartsplace.k5nwa.com/ > < http://www.softrockradio.org/ >

Never take life seriously. Nobody gets out alive anyway.




--
http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 

4 State QRP Group NCS - 40m & 160m
4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155C
SOC #848
30MDG#1176
NEQRP #693
GORC #192
DMC (Digital Modes Club) # 06686


Re: LOOKING FOR: 4SQRP SS-40

cbayona <CBayona@...>
 

I'm hoping that the kits will be available soon. I have one and it works well, I would like to build one for 30M.

At 12:45 PM 12/27/2013, you wrote:
I am looking for a SS-40 receiver either still in kit form, or assembled. If anyone has one laying around they don't want, pls let me know.

Thanks
Marshall Dias
W0OTM

------------------------------------

4SQRP Website: http://4sqrp.com
OzarkCon is coming April 4-5, 2014 in Branson, MO
View Details at http://www.ozarkcon.com/index.phpYahoo Groups Links


--
Cecil - k5nwa
< http://thepartsplace.k5nwa.com/ > < http://www.softrockradio.org/ >

Never take life seriously. Nobody gets out alive anyway.


Re: Wed Nite Nets

Wayne Dillon
 

Perhaps we should ask if there are any stations with QSP's for the net?
Wayne - KC0PMH


On Fri, Dec 27, 2013 at 11:20 AM, AG1P - Ron <ag1p@...> wrote:
 

That will work assuming the distant station can hear net control.  I remember participating in a phone net when my QTH was CT.  Might have been ECARS.  After he took all check-ins, net control would ask if any relays, and then asked farthest west station to call for check-ins and usually gathered in a few more people.  Helped keep interest in the net and more people over wider area could participate.  It was also good practice for difficult times when relays can really make a difference.

 

72 - Ron

 

From: 4sqrp@... [mailto:4sqrp@...] On Behalf Of WA0ITP
Sent: Friday, December 27, 2013 7:09 AM
To: 4sqrp@...
Subject: Re: [4sqrp] Re: Wed Nite Nets

 

 

I'll do the same. I know there have been times that Bart couldn't make it into the 40M net.  This should work for him as well.  Hope that that Ron and others can make it in this way. 
----------------------------------
Back to the bench, Winter's too valuable to waste.
I love this radio stuff !
72   WA0ITP
www.wa0itp.com
www.4sqrp.com

 

 
 

----- Original Message -----

Sent: Friday, December 27, 2013 8:54 AM

Subject: Re: [4sqrp] Re: Wed Nite Nets

 

Hi Steve and the rest of the gang,

That would suite me, I'll could just send "any relays?" or "any QSP?" and see what turns up. Either way I'm willing to go along with the group consensus. As you say 40 in the evenings has been poor (and that's being generous!) so if we're all in agreement I'll begin that regime next Wednesday (I'll send "any QSP?" when we're all done with the checkins that can make it unassisted).

72/3 es God Bless de Wayne - KC0PMH

 

On Fri, Dec 27, 2013 at 8:45 AM, Steve Sellmeyer <ssellmeyer@...> wrote:

 

Never have found a Q code for use as "any relays ?" Has anyone else ? When serving as NCS for the Midwest Net for the NAQCC I occasionally just say "any relays ? "  It has worked a time or two. Needless to say 7.1235 has been VERY poor in the evenings and QNI's have dropped to almost nothing.

 

Just my 2 cents worth...........Steve/WBQQT



 

--

http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.

 

QRP -  EFFICIENCY AND SKILL, NOT POWER. 

 

I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.


God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17

 


4 State QRP Group NCS - 40m & 160m

4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504

NAQCC # 0759
QRP-ARCI #11505
SKCC #1155C
SOC #848
30MDG#1176

NEQRP #693

GORC #192

DMC (Digital Modes Club) # 06686




--
http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 

4 State QRP Group NCS - 40m & 160m
4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155C
SOC #848
30MDG#1176
NEQRP #693
GORC #192
DMC (Digital Modes Club) # 06686


LOOKING FOR: 4SQRP SS-40

Marshall Dias
 

I am looking for a SS-40 receiver either still in kit form, or assembled. If anyone has one laying around they don't want, pls let me know.

Thanks
Marshall Dias
W0OTM


Re: Wed Nite Nets

AG1P Ron
 

That will work assuming the distant station can hear net control.  I remember participating in a phone net when my QTH was CT.  Might have been ECARS.  After he took all check-ins, net control would ask if any relays, and then asked farthest west station to call for check-ins and usually gathered in a few more people.  Helped keep interest in the net and more people over wider area could participate.  It was also good practice for difficult times when relays can really make a difference.

 

72 - Ron

 

From: 4sqrp@... [mailto:4sqrp@...] On Behalf Of WA0ITP
Sent: Friday, December 27, 2013 7:09 AM
To: 4sqrp@...
Subject: Re: [4sqrp] Re: Wed Nite Nets

 

 

I'll do the same. I know there have been times that Bart couldn't make it into the 40M net.  This should work for him as well.  Hope that that Ron and others can make it in this way. 
----------------------------------
Back to the bench, Winter's too valuable to waste.
I love this radio stuff !
72   WA0ITP
www.wa0itp.com
www.4sqrp.com

 

 
 

----- Original Message -----

Sent: Friday, December 27, 2013 8:54 AM

Subject: Re: [4sqrp] Re: Wed Nite Nets

 

Hi Steve and the rest of the gang,

That would suite me, I'll could just send "any relays?" or "any QSP?" and see what turns up. Either way I'm willing to go along with the group consensus. As you say 40 in the evenings has been poor (and that's being generous!) so if we're all in agreement I'll begin that regime next Wednesday (I'll send "any QSP?" when we're all done with the checkins that can make it unassisted).

72/3 es God Bless de Wayne - KC0PMH

 

On Fri, Dec 27, 2013 at 8:45 AM, Steve Sellmeyer <ssellmeyer@...> wrote:

 

Never have found a Q code for use as "any relays ?" Has anyone else ? When serving as NCS for the Midwest Net for the NAQCC I occasionally just say "any relays ? "  It has worked a time or two. Needless to say 7.1235 has been VERY poor in the evenings and QNI's have dropped to almost nothing.

 

Just my 2 cents worth...........Steve/WBQQT



 

--

http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.

 

QRP -  EFFICIENCY AND SKILL, NOT POWER. 

 

I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.


God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17

 


4 State QRP Group NCS - 40m & 160m

4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504

NAQCC # 0759
QRP-ARCI #11505
SKCC #1155C
SOC #848
30MDG#1176

NEQRP #693

GORC #192

DMC (Digital Modes Club) # 06686


Re: Frequency adjustment on a simple cw transmitter

James Compton
 

Jim,
Thanks for the information!  I'll send you some of the documents that Lew Smith sent me when I ordered his kit.  When I asked him about component values for other bands, he also sent me a page suggesting a change in filter(?) capacitors and coils.  I have built one for 20 m and one for 15 m and the signal sounds good, though each one the frequency was, as stated, about 1.5 to 2 kHz below the crystal frequency.  I read yesterday somewhere that this is nearly always the case when building most qrp transmitters.  I purchased some PCBs from Farcircuits.com for the Lew Smith transmitter which combines the keyer transistor and the regulated power transistor in the board.  My first use of the PCB was for the 15 M transmitter.
I also just received some 0 - 266 polyvaricons from Rex Harper at qrpme.com and intend to experiment with them in the Simple Simon VXO circuit to see how effective that will be in getting my transmitters precisely on frequency.
My next task is to try to find a "reasonable" way to check the harmonics of these transmitters.  I don't have a spectrum analyzer. I do have an oscilloscope, but I'm just not very knowledgeable about many of its uses.
Thanks for the information.  It's exactly what I was looking for.
At some point, I'm going to have to learn code well enough to actually try one of these transmitters out on the air!
72/3,
Jim Compton, K4JDC

-----Original Message-----
From: Jim Kortge
Sent: Dec 27, 2013 9:29 AM
To: 4sqrp@..., jdcompton@...
Subject: Re: [4sqrp] Frequency adjustment on a simple cw transmitter

On 12/23/2013 12:38 PM, jdcompton@... wrote:
>
>
> I have recently built several QRP cw transmitters, all based on Lew
> Smith's Simple 17 meter QRP Transmitter design, but in different
> bands.

Where is that circuit published?

Without exception, the transmitting frequency of all of them
> has been between 1 - 2 kHz below the crystal frequency. Adding a
> capacitor to the circuit, either in series or parallel with the
> crystal will supposedly change the frequency, as will a
> trimmer/variable capacitor (as in Simple Simon VXO) but I don't know
> if it be changed either up or down.

A capacitor in series with the crystal will always move it up in
frequency.
>
> My latest build for 15 meters uses a 21.060 crystal and the output
> frequency of the transmitter is 21.048. I can and will experiment
> with capacitors, but it would help knowing where to start.

That starting point should be to put the specified load capacitor in
series with the crystal. In many cases, that would be on the order of
18-27 pF and is often written right on the crystal case or specified
by the manufacturer or seller.
>
> My question: does anyone know where in the circuit to add
> capacitance to raise the final frequency?

Directly in series with the crystal, either in the hot lead or the one
going to ground. It doesn't matter which lead. The grounded lead is
the more common location though.

.....or lower it for that
> matter.

To lower the frequency, you add inductance in series with the crystal.
You will have to play with the value. Above a certain value, the
crystal will stop oscillating. 10-68 uH would be a good range to play
with for starters.


Or is there an alternative method, such as changing the two
> filter coils?

Not if it is crystal controlled. The crystal frequency has to be
changed to move the transmit frequency.

Adding a capacitor would be simpler, if that would work.

It will.... Experimentation is required though. It can't be easily
calculated unless the crystal has been fully characterized, which
takes a bunch of measurements that most folks can't do.
>
>
> Jim, K4JDC

72 and GL Jim,

Jim, K8IQY



Re: Wed Nite Nets

WA0ITP
 

I'll do the same. I know there have been times that Bart couldn't make it into the 40M net.  This should work for him as well.  Hope that that Ron and others can make it in this way. 
----------------------------------
Back to the bench, Winter's too valuable to waste.
I love this radio stuff !
72   WA0ITP
www.wa0itp.com
www.4sqrp.com
 
 
 

----- Original Message -----
Sent: Friday, December 27, 2013 8:54 AM
Subject: Re: [4sqrp] Re: Wed Nite Nets

Hi Steve and the rest of the gang,
That would suite me, I'll could just send "any relays?" or "any QSP?" and see what turns up. Either way I'm willing to go along with the group consensus. As you say 40 in the evenings has been poor (and that's being generous!) so if we're all in agreement I'll begin that regime next Wednesday (I'll send "any QSP?" when we're all done with the checkins that can make it unassisted).
72/3 es God Bless de Wayne - KC0PMH


On Fri, Dec 27, 2013 at 8:45 AM, Steve Sellmeyer <ssellmeyer@...> wrote:
 

Never have found a Q code for use as "any relays ?" Has anyone else ? When serving as NCS for the Midwest Net for the NAQCC I occasionally just say "any relays ? "  It has worked a time or two. Needless to say 7.1235 has been VERY poor in the evenings and QNI's have dropped to almost nothing.
 
Just my 2 cents worth...........Steve/WBQQT




--
http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 

4 State QRP Group NCS - 40m & 160m
4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155C
SOC #848
30MDG#1176
NEQRP #693
GORC #192
DMC (Digital Modes Club) # 06686


Re: Wed Nite Nets

Wayne Dillon
 

Hi Steve and the rest of the gang,
That would suite me, I'll could just send "any relays?" or "any QSP?" and see what turns up. Either way I'm willing to go along with the group consensus. As you say 40 in the evenings has been poor (and that's being generous!) so if we're all in agreement I'll begin that regime next Wednesday (I'll send "any QSP?" when we're all done with the checkins that can make it unassisted).
72/3 es God Bless de Wayne - KC0PMH


On Fri, Dec 27, 2013 at 8:45 AM, Steve Sellmeyer <ssellmeyer@...> wrote:
 

Never have found a Q code for use as "any relays ?" Has anyone else ? When serving as NCS for the Midwest Net for the NAQCC I occasionally just say "any relays ? "  It has worked a time or two. Needless to say 7.1235 has been VERY poor in the evenings and QNI's have dropped to almost nothing.
 
Just my 2 cents worth...........Steve/WBQQT




--
http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 

4 State QRP Group NCS - 40m & 160m
4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155C
SOC #848
30MDG#1176
NEQRP #693
GORC #192
DMC (Digital Modes Club) # 06686


Re: Wed Nite Nets

Steve Sellmeyer <ssellmeyer@...>
 

Never have found a Q code for use as "any relays ?" Has anyone else ? When serving as NCS for the Midwest Net for the NAQCC I occasionally just say "any relays ? "  It has worked a time or two. Needless to say 7.1235 has been VERY poor in the evenings and QNI's have dropped to almost nothing.
 
Just my 2 cents worth...........Steve/WBQQT


Re: Wed Nite Nets

Johnny AC0BQ
 

Gm John
The QNB? Should work, we will just have to listen for it!
What does the group think??
I have just sent relay a few times but didn't
Get any takers!
72
Johnny AC0BQ 

On Friday, December 27, 2013, demuthent@... wrote:

I see two "Q" signals concerning relaying.  
The first is QSP?  --  Will you relay to _____ ?  In a net, when you are trying to check in, that might be rather confusing because everyone will have to listen to the entire message to get the idea that the station is not calling the NCS but rather is requesting a relay TO the NCS.

The second is QNB, normally reserved for Net Control Stations only:

     QNB  --  Act as a relay Between _____ and _____.

QNB sounds as if it is normally used primarily as a directive by the NCS.
Perhaps we could use QNB? as a request for someone to relay between our station and the NCS.

Just a thought ...


Finally got a longwire between the house and a pole 175' away, and at long last got a ground wire installed for my second floor shack.  Hope to get my rig unpacked from Field Day and set up this weekend so I can begin checking in once again.  Have been using a 40-meter dipole about 8 feet above ground (NVIS) - but it has gotten my eastern Ohio signal into the net almost every time I have tried.  It will be interesting to see how the longwire will compare!


Merry Christmas & 73 de John - K8CQA 



--
QRP....."more smiles per watt"


Re: Frequency adjustment on a simple cw transmitter

Jim Kortge
 

On 12/23/2013 12:38 PM, jdcompton@... wrote:


I have recently built several QRP cw transmitters, all based on Lew
Smith's Simple 17 meter QRP Transmitter design, but in different
bands.
Where is that circuit published?

Without exception, the transmitting frequency of all of them
has been between 1 - 2 kHz below the crystal frequency. Adding a
capacitor to the circuit, either in series or parallel with the
crystal will supposedly change the frequency, as will a
trimmer/variable capacitor (as in Simple Simon VXO) but I don't know
if it be changed either up or down.
A capacitor in series with the crystal will always move it up in frequency.

My latest build for 15 meters uses a 21.060 crystal and the output
frequency of the transmitter is 21.048. I can and will experiment
with capacitors, but it would help knowing where to start.
That starting point should be to put the specified load capacitor in series with the crystal. In many cases, that would be on the order of 18-27 pF and is often written right on the crystal case or specified by the manufacturer or seller.

My question: does anyone know where in the circuit to add
capacitance to raise the final frequency?
Directly in series with the crystal, either in the hot lead or the one going to ground. It doesn't matter which lead. The grounded lead is the more common location though.

.....or lower it for that
matter.
To lower the frequency, you add inductance in series with the crystal. You will have to play with the value. Above a certain value, the crystal will stop oscillating. 10-68 uH would be a good range to play with for starters.


Or is there an alternative method, such as changing the two
filter coils?
Not if it is crystal controlled. The crystal frequency has to be changed to move the transmit frequency.

Adding a capacitor would be simpler, if that would work.

It will.... Experimentation is required though. It can't be easily calculated unless the crystal has been fully characterized, which takes a bunch of measurements that most folks can't do.


Jim, K4JDC
72 and GL Jim,

Jim, K8IQY


Re: Wed Nite Nets

John C. Demuth - K8CQA
 

I see two "Q" signals concerning relaying.  
The first is QSP?  --  Will you relay to _____ ?  In a net, when you are trying to check in, that might be rather confusing because everyone will have to listen to the entire message to get the idea that the station is not calling the NCS but rather is requesting a relay TO the NCS.

The second is QNB, normally reserved for Net Control Stations only:

     QNB  --  Act as a relay Between _____ and _____.

QNB sounds as if it is normally used primarily as a directive by the NCS.
Perhaps we could use QNB? as a request for someone to relay between our station and the NCS.

Just a thought ...


Finally got a longwire between the house and a pole 175' away, and at long last got a ground wire installed for my second floor shack.  Hope to get my rig unpacked from Field Day and set up this weekend so I can begin checking in once again.  Have been using a 40-meter dipole about 8 feet above ground (NVIS) - but it has gotten my eastern Ohio signal into the net almost every time I have tried.  It will be interesting to see how the longwire will compare!


Merry Christmas & 73 de John - K8CQA 


Re: New Magic Box Run.

Paul Smith
 

Glad to hear the kit arrived ok. The MB is a dandy kit. Enjoy!

de Paul N0NBD 

Sent from my iPad

On Dec 26, 2013, at 7:57 PM, Nate Bargmann <n0nb@...> wrote:

 

I placed my order on the evening of the 20th and the board and parts
arrived today from Paul, N0NBD. This is a very high quality board,
certainly nicer than the boards from the Heathkit days. Looks very good
and fast service. BTW, the Magic Box is the first $SQRP kit I've bought
and I'm pleased. I'll have to look for another one of these days!

72, de Nate >>

--

"The optimist proclaims that we live in the best of all
possible worlds. The pessimist fears this is true."

Ham radio, Linux, bikes, and more: http://www.n0nb.us