Date   

Re: Meeting Saturday

Daniel Mullen
 

Dave,
  I've had a little trouble with my truck.  I replaced what the shop said was a bad battery, but it seems to be still running a little rough.  I think we'll stay near town until I'm convinced that's all it was. 
  We'll try to make it next month.  Say hello to everyone for us!
  Hope to see you soon.
  73 Daniel KD0SZS and Diana



From: David Bixler
To: 4sqrp discussion list <4sqrp@...>; 4SQRP Yahoo Reflector <4sqrp@...>; Wayne King K0BPJ
Sent: Thursday, February 14, 2013 10:24 AM
Subject: [4sqrp] Meeting Saturday

 
Hello folks:

This is your reminder that the February 4SQRP luncheon gathering will be
this upcoming Saturday, the 16th, at the Country Kitchen in downtown
Seneca, MO. Lunch will be at 11:00 AM.

There are directions to the Country Kitchen on the 4SQRP web site at:
http://www.4sqrp.com/CountryCupboard.html

The WX forecast says that Saturday will be cooler, but no rain or snow
predicted. The yellow daffodils are blooming at my QTH so spring is
getting close!

This message is being sent to both the old and new email reflectors, so
you may get two copies of the message.

73, Dave
W0CH



Overall rating
 


IHAB Ballon Beacon Tommorrw

WA0ITP
 

The IHAB Balloon Launch from the lawn of Rockwell Collins in Cedar Rapids, IA
will be carrying a 20M beacon built by Dave Cripe, NM0S.

Due to the CW DX contest monopolizing the lower end of the band, the frequency
will be 14.323.

----------------------------------
I love this radio stuff !
72 WA�ITP
www.wa0itp.com
www.4sqrp.com
www.qrpspots.com


Re: Meeting Saturday

Tom Sevart <n2uhc@...>
 

It's been a while since I made it to Seneca, so will be looking forward to seeing everyone on Saturday.

--
Tom Sevart N2UHC
St. Paul, KS


Re: Check in

Phil Anderson
 

test uncle phil..........see ya all at ozcon
 
 

----- Original Message -----
From: ac0bq
Sent: Tuesday, February 12, 2013 7:48 PM
Subject: [4sqrp] Check in

 

Ge group:
Looks like I made the cut over!
Thanks Don for all of you efforts to keep our QRP chatter moving, I am sure yahoo will be ok for us, works well with several other groups!
72
Johnny AC0BQ


Re: Toroid Winding Method

davemrtn
 


Toroid Winding Method

nm0s_qrp <ai9e_qrp@...>
 

I found this posted on the AMRAD list this morning. It is an excellent way to wind toroids!

http://www.youtube.com/watch?v=GT44U10WqRA


73 Dave NM0S


Meeting Saturday

David Bixler <qrp@...>
 

Hello folks:

This is your reminder that the February 4SQRP luncheon gathering will be this upcoming Saturday, the 16th, at the Country Kitchen in downtown Seneca, MO. Lunch will be at 11:00 AM.

There are directions to the Country Kitchen on the 4SQRP web site at: http://www.4sqrp.com/CountryCupboard.html

The WX forecast says that Saturday will be cooler, but no rain or snow predicted. The yellow daffodils are blooming at my QTH so spring is getting close!

This message is being sent to both the old and new email reflectors, so you may get two copies of the message.


73, Dave
W0CH


RMR net 14.0625 at 2200z your speed

Dale Putnam
 

Welcome to the RMR net today, with snow on the way, and the wind up.. again.
I will be using my temp antenna, that is 20 foot at the apex, and hopefully be able to
use relays too.
Drop by, say hi.


Have a great day,
 
 
--... ...-- Dale - WC7S in Wy
 
 


Re: Early 80m net

Don Jackson
 

Wayne,

Sorry your messages to this group got delayed. It appears the spam detector used by Yahoo decided your messages were spam and they got trapped until I found them this morning. Even then, I think their system had some hiccups when I approved them. Hopefully in the future we won't have these problems.

Don AE5K


Re: Wednesday nite nets Please not NCS Changes for this week only

Virgil R. Hammond <n0tgr@...>
 

Wed. nite PSK didn't happen, sorry fellows your NCS was working a 1/2 mile of fence and the
ole sandman got him in that easy chair.   See ya all next week,  Dick N0TGR


Re: "reply to sender"

Don Jackson
 

Thank you Chuck. I've made the change and this email message checks it out. For my email application, "Reply" puts in the group address, "Reply All" puts in both group address and a cc: to the sender I'm replying to. One more thing accomplished.

Don AE5K

On 02/14/2013 07:09 AM, Chuck Carpenter wrote:
Don,

In the group main page under Management, Group Ssttings, Messages


*Reply-to*

* All Members
* Sender
* Group Owner
* Leave Group
* All Members & Sender




At 06:50 AM 2/14/2013, you wrote:
knows of a
way to change this so the reader has a choice of replying to group or
individual, please jump in here.

Chuck Carpenter, W5USJ
EM22cv, Rains Co. TX


Re: "reply to sender"

Chuck Carpenter
 

Don,

In the group main page under Management, Group Ssttings, Messages

Reply-to
  • All Members
  • Sender
  • Group Owner
  • Leave Group
  • All Members & Sender



At 06:50 AM 2/14/2013, you wrote:
knows of a
way to change this so the reader has a choice of replying to group or
individual, please jump in here.


Chuck Carpenter, W5USJ
EM22cv, Rains Co. TX


Re: "reply to sender"

Don Jackson
 

On 02/14/2013 06:30 AM, WA0ITP wrote:
*GM Sam,*
**
*Good to see you on the list, not your problem tho. The problem is that
Don has it set up so you can only reply to the list, not the individual.*

----------------------------------
I love this radio stuff !
72 WAØITP
Overall, same setting that we've had for years. It appears Yahoo Groups
is slightly different action. We've had debates before on this and the
consensus has been (on more than one list I've run) to have the reply
default to the group. If anyone who knows Y G better than I knows of a
way to change this so the reader has a choice of replying to group or
individual, please jump in here.

Don AE5K


Re: T/R Switching

Bill Cromwell
 

Hi,

I have come to prefer separate transmitter/receiver operation. I also
prefer to listen to my transmitter instead of having just a sidetone
audio oscillator (CW). In any case when I changeover from transmit to
receive the receiver antenna terminal(s) are directly grounded. Even if
I have a separate receive antenna that is still something I do.

My "pretty" receivers are setup to completely mute everything from the
antenna up to the audio stage and audio is left on for the sidetone. I
have used receivers that don't quite silence the rf/if stages and allow
us to set the level that can come though - *almost* silenced. The
receiver oscillator and mixer are running and the amplifiers are mostly
shut down. The transmitted signal becomes the "sidetone". I am modifying
my reveivers that don't work that so that they will. When we operate
that way we will notice anything that isn't just quite right including
"forgot to net the TX". Don't ask me how I know that (evil grin).

It's possible to do all of that with full break-in QSK or semi break-in.
I have come to prefer a manual switch that changes everything over for
the T/R functions. It is the easiest to implement and the most reliable.
I have a set of Kenwood Twins that are setup with the transceive cable
and semi break-in using the VOX. On that rig I just use the manual T/R
switch on the front panel of the transmitter..same as all the rest.
Sometimes the QSK process cuts off part or even all of the first dit and
if the first element is a dah it can become a dit. The manual switch
eliminates that. The first tap of the key is already live.

73,

Bill KU8H


Re: "reply to sender"

WA0ITP
 

GM Sam,
 
Good to see you on the list, not your problem tho.  The problem is that Don has it set up so you can only reply to the list, not the individual.
 
----------------------------------
I love this radio stuff !
72   WAØITP
www.wa0itp.com
www.4sqrp.com
www.qrpspots.com
 
 

----- Original Message -----
Sent: Tuesday, February 12, 2013 5:28 PM
Subject: [4sqrp] "reply to sender"

Sorry for not paying attention to the "To:" line.  Will have to get used to the yahoo protocol.

72,
Sam, AL7V


Joel - KB5FCF here

joel_kb5fcf
 

Hello all, just checking in and testing my email settings.
Looking foreward to another great Ozarkcon.

Joel-KB5FCF


Re: T/R Switching

w5jhjerry <jerry@...>
 

Hi Jim,
Phil Salas, AD5X, wrote a QST article about a boat anchor T/R switch. He has a copy on his web site. It is here:
<http://www.ad5x.com/images/Articles/QSKBArevA.pdf>;

One of the problems I see with his design is that he uses 2 relays. The first relay follows your keying or keyer. He uses this relay to mute the receiver and key the transmitter. A problem may occur because the relay will switch with the keyer and the relay will unmute the receiver before the transmitter signal has decayed. If you added a second relay to his design one which would be in parallel with the antenna relay, it would probably work fine. The additional relay would be used to mute the receiver. His design will handle up to 100 watts or so.
Jerry W5JH
"building something without experimenting is just solder practice"

--- In 4sqrp@yahoogroups.com, "Jim, ND9M / VQ9JC" wrote:


As a recent joiner of 4SQRP, I'm looking forward to getting back into building my own stuff. The NS-40 seems to be a popular and well designed rig, and my plan is to use my FT-857 for the RX side. Otherwise, the 857 is my day-to-day rig, and I have to protect it. (For QRP use, I drop the drive down and measure the output on an external wattmeter.)

So here's a newbie query from an old time ham (me!) who should know the answer but doesn't: What is everyone else who uses separate TX and RX units doing to mute their RXs when the TXs are doing their thing? A rule of thumb was given me a few days ago that there must be at least 40 dB attenuation to protect the RX front end, but that's also going to depend on what the TX power is to start with.

My old Hallicrafters RXs could handle a bit of a pop at QRP levels when I did manual switching. I'm a bit leery however about subjecting the "newfangled" 857 to similar treatment. I never had a Dow key which would've done nicely for the boat anchors, but - assuming I could put my hands on one - would a Dow key with its mechanical relay have fast enough response time to protect the 857's front end?

What other alternatives are currently in play?

Tks/73,

Jim, ND9M / VQ9JC


Re: T/R Switching

Todd K7TFC
 

Jim,

Here's a link to a QSK circuit that uses reed relays. You find find it'll suitt your purpose.


73,

Todd
------------------------------------------------------------------------------------
K7TFC / Medford, Oregon, USA / CN82ni / UTC-8
------------------------------------------------------------------------------------
QRP (CW & SSB) / EmComm / SOTA / Homebrew / Design


On Wed, Feb 13, 2013 at 7:29 PM, Nick-WA5BDU <nick-wa5bdu@...> wrote:
 

Good question.  I do a lot of fooling with different boatanchor matchups.  I built this RF sensing antenna switcher from Solid State Design for the Radio Amateur a few years ago that serves me well.  It has adjustable drop out, so it's semi-break-in.  But no provision for muting so I ride the AF & RF gains.

For little QRP RX and TX boards, I might just use an SPDT toggle switch to swap between TX and RX and maybe get those phones off my ears a bit before transmitting.

But like you said, you'd like to protect a more modern rig.  The old BAs were tough. With some kind of SPDT arrangement whether relay or toggle switch, you're never going to have the TX connected directly into the RX input.  Worst case, slow switching will have the TX deadheaded for a few ms but I don't know that you'd couple excess RF into the receiver doing that.  Maybe if you're on 80 or 40 you can afford to have the preamp off and even a bit of attenuation turned on for an extra measure of protection.  A bandaid fix for sure, I admit.  However, I have a K3 and if it senses excess RF into the receiver, it will start automatically taking such steps.

If your switch or relay had an extra pole, you could use it to ground the RX antenna input during transmit.  That still leaves you with that switching time vulnerability though.  The only thing I can think of for that is some kind of sequencer, like a microcontroller.  Or as others have said:

Something like the magic box would be the Cadillac solution, of course.

72-

Nick, WA5BDU


On 2/13/2013 10:06 AM, Jim, ND9M / VQ9JC wrote:
 

As a recent joiner of 4SQRP, I'm looking forward to getting back into building my own stuff. The NS-40 seems to be a popular and well designed rig, and my plan is to use my FT-857 for the RX side. Otherwise, the 857 is my day-to-day rig, and I have to protect it. (For QRP use, I drop the drive down and measure the output on an external wattmeter.)
 
So here's a newbie query from an old time ham (me!) who should know the answer but doesn't: What is everyone else who uses separate TX and RX units doing to mute their RXs when the TXs are doing their thing? A rule of thumb was given me a few days ago that there must be at least 40 dB attenuation to protect the RX front end, but that's also going to depend on what the TX power is to start with.
 
My old Hallicrafters RXs could handle a bit of a pop at QRP levels when I did manual switching. I'm a bit leery however about subjecting the "newfangled" 857 to similar treatment. I never had a Dow key which would've done nicely for the boat anchors, but - assuming I could put my hands on one - would a Dow key with its mechanical relay have fast enough response time to protect the 857's front end?
 
What other alternatives are currently in play?
 
Tks/73,
 
Jim, ND9M / VQ9JC





Re: T/R Switching

Nick-WA5BDU
 

Good question.  I do a lot of fooling with different boatanchor matchups.  I built this RF sensing antenna switcher from Solid State Design for the Radio Amateur a few years ago that serves me well.  It has adjustable drop out, so it's semi-break-in.  But no provision for muting so I ride the AF & RF gains.

For little QRP RX and TX boards, I might just use an SPDT toggle switch to swap between TX and RX and maybe get those phones off my ears a bit before transmitting.

But like you said, you'd like to protect a more modern rig.  The old BAs were tough. With some kind of SPDT arrangement whether relay or toggle switch, you're never going to have the TX connected directly into the RX input.  Worst case, slow switching will have the TX deadheaded for a few ms but I don't know that you'd couple excess RF into the receiver doing that.  Maybe if you're on 80 or 40 you can afford to have the preamp off and even a bit of attenuation turned on for an extra measure of protection.  A bandaid fix for sure, I admit.  However, I have a K3 and if it senses excess RF into the receiver, it will start automatically taking such steps.

If your switch or relay had an extra pole, you could use it to ground the RX antenna input during transmit.  That still leaves you with that switching time vulnerability though.  The only thing I can think of for that is some kind of sequencer, like a microcontroller.  Or as others have said:

Something like the magic box would be the Cadillac solution, of course.

72-

Nick, WA5BDU


On 2/13/2013 10:06 AM, Jim, ND9M / VQ9JC wrote:
 

As a recent joiner of 4SQRP, I'm looking forward to getting back into building my own stuff. The NS-40 seems to be a popular and well designed rig, and my plan is to use my FT-857 for the RX side. Otherwise, the 857 is my day-to-day rig, and I have to protect it. (For QRP use, I drop the drive down and measure the output on an external wattmeter.)
 
So here's a newbie query from an old time ham (me!) who should know the answer but doesn't: What is everyone else who uses separate TX and RX units doing to mute their RXs when the TXs are doing their thing? A rule of thumb was given me a few days ago that there must be at least 40 dB attenuation to protect the RX front end, but that's also going to depend on what the TX power is to start with.
 
My old Hallicrafters RXs could handle a bit of a pop at QRP levels when I did manual switching. I'm a bit leery however about subjecting the "newfangled" 857 to similar treatment. I never had a Dow key which would've done nicely for the boat anchors, but - assuming I could put my hands on one - would a Dow key with its mechanical relay have fast enough response time to protect the 857's front end?
 
What other alternatives are currently in play?
 
Tks/73,
 
Jim, ND9M / VQ9JC




Early 80m net

Wayne Dillon
 

Ge all. For those who missed the e-mail it was my privelage to stand in for Terry on the early 80m net tonight. He is/was on his way back from Branson and would be calling the late net. As it turned out I should have volunteered to do the late net as well because when I tried '40 at the late net time it was a bust. Oh well, that's how it goes sometimes. I was rewarded with a bumper check-in on '80 though:

N0NBD - Paul - KS
K0MC - Mike - CO
K2HT - Harold - MO
K5DCM - David - AR
KB4QQJ - Randy - NC
N9RLO - John - IN
KI8R - Michael - OH
AC5P - Michael - OK

To all who checked in a huge thank you for making my evening, it was a blast. To those I missed, my apologies and I will try harder next time. Hopefully '40 will start to improve as we progress towards spring. Unless otherwise informed I'll be back on '40 next week. If I have the opportunity I may give '30 a go over the weekend. If I do I'll post to QRPSpots.

72/3 es God Bless de Wayne - KC0PMH

P.S. Terry, I'm beginning to see the attraction of 80m :)
--
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 #1155
SOC #848
30MDG#1176
NEQRP #693
GORC #192