Date   

Re: Murania Audio

WA0ITP
 

Thanks Dave!  Just time for the 4H kid's build, we're finishing up Monday night.
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
On 7/27/2018 7:30 AM, nm0s_qrp via Groups.Io wrote:

I had a chance to check out a Murania that one of out builders had put together, that he reported low audio.  On examining it, I found that the regeneration loop was too large, and the receiver was in full oscillation.

When the receiver is oscillating, it makes a large RF signal that is detected in the receiver IC, and drives down the AGC voltage.  This cuts the gain of the IC.  So, to set up the regen, the loop needs to be about the diameter of a pencil, no larger, and exactly perpendicular to the board, and to the ferrite rod.  That is neutral feedback.  If you then twist it slightly either way, it will increase or decrease the feedback.  It is hard to hear a change in volume with strong stations, because the AGC flattens out the volume.  If you hear whistles as you turn the tuning knob, it is oscillating, and the regeneration is too high.

Hopefully this helps some other builder!

73 Dave NM0S


Re: FS Rockmite ][

George H. Gates
 


Sold


Re: Brutus bash this year???

Tom Sevart
 

On 07/28/18 12:22, Wayne Dillon wrote:
Hi folks,
Brutus Bash this year???
Blessings,
Wayne - NQ0RP
I would like to go this year. I missed last year and that was the first time since we started having them that I missed it.

--
Tom Sevart N2UHC
St. Paul, KS


Off subject

Don, W9EBK
 

This message is a bit off subject,  but since being employed is helpful to affording radios I hope the moderators will forgive me for posting this.  The company I have worked for since 1982 announced they are expanding and looking for a technician with good mechanical,  electronic,  Windows and other PC skills in the southeastern MO area. I know a lot of the work load is in the Mountain View area, but spans Southern IL across the eastern half of MO. If you want details please contact W9EBK at donw9ebk@... 


Hilltopper 20 kits

Johnny AC0BQ
 

Good afternoon
We have the Hilltopper 20 kits back in stock and upgraded to Rev 2.
Thanks for you patience.

72
Johnny AC0BQ 

--
Check out the 4SQRP website at 4sqrp.com


Re: Brutus bash this year???

Charles W. Powell
 

Wayne, 

You got to this before I did.  I’ve been thinking all week about asking.  I have it on my calendar and I definitely plan to go.  I’ll probably spend a couple of extra days like I did last year.  The quiet is good for the soul.  And the ribs were good for the appetite!

72,

Charles - NK8O

On Jul 28, 2018, at 12:22 PM, Wayne Dillon <wayne.dillon@...> wrote:

Hi folks,
Brutus Bash this year???
Blessings,
Wayne - NQ0RP

--
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
God Bless from Wayne Dillon - NQ0RP

Fate whispered to courageous "You cannot withstand the storm"
Courageous  whispered back "I am the storm"



Brutus bash this year???

Wayne Dillon
 

Hi folks,
Brutus Bash this year???
Blessings,
Wayne - NQ0RP

--
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
God Bless from Wayne Dillon - NQ0RP

Fate whispered to courageous "You cannot withstand the storm"
Courageous  whispered back "I am the storm"


Re: 80 meter net

Brian Crittendon
 

How about low noise receive only antennas? I know they don't help with QSB, but I've used them once or twice when portable for storm noise. They work great for that.


Re: 80 meter net

w2sh@...
 

Hello,


First let me say that although I have not  attempted a QNI for the 80m net, I do hear some of you.  I hear you but I don't read you Q5.  And because I have about 70 minutes of more darkness than y'all I have a definite advantage.  Later, when I begin to QNI on 80m I know I'll hear you better than you will hear me. 


I know this from what's going on these days on 40m.  Yes there's QRN and QSB but Bill, KV6Z, usually is 559/569 here in NJ, and because of the afore-mentioned darkness differential he gives me a 339.  That's over nearly a 1,200-mile path.


OK for 40m. Although I often have Tuesday night conflicts, I do try to QNI the Michigan QRP net on 3.535 mHz at 2100 hours ET.  That's a distance of slightly less than 500 miles.  Ed, AB8DF, the longstanding NCS, always gives me a lesser RST than what I give, but for years I have NEVER flunked a QNI attempt from June through September.


The North American QRP CW Club, NAQCC, has monthly sprints that use 20m, 40m, 80m.  The sprints run from 2030 to 2230 hours ET. During the summer months participants usually start on 20m and when it folds go to 40m, and then some go to 80m in the final 30-45 minutes. 


80m is unfairly neglected, and here I'm speaking from summertime condx in NJ, the QRN and QSB are awful on 40m, and the QRN, but NOT the QSB, is just as bad on 80m.  BUT, the signal strengths on 80m for distances out to 390 miles are invariably 589 or 599 plus.  And they certainly are not that on 40m even though the distances usually reached are more than twice as great. 


Long story short: the higher received signal-to-noise ratio on 80m vs. 40m in the summer months makes the 80m band a communications experience that should not be abandoned.


72,


Charles (aka Chas), W2SH

4SQRP 0085; MIQRP 1492; NAQCC 0056)






From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of KENT TRIMBLE <k9ztv@...>
Sent: Friday, July 27, 2018 3:17 PM
To: main@4SQRP.groups.io
Subject: Re: [4SQRP] 80 meter net
 
Don't give up so quickly on 80-meters, although trying to work it with 5-watts does test the mettle of the operator.

Last Wednesday, Paul Smith (Kansas) reported that Bill Dekl (Oklahoma), a distance of 113 miles, was 599 and "gangbusters" above a 10-0ver-S9 noise level (and during a solar storm, too).

National Traffic System nets operate year-round on 80 meters with generally satisfactory signals, although obviously not at QRP power levels.  Aside from overhead electrical storms in which no one should operate, the old and proven technique of decreasing one's RF GAIN control, increasing one's AF GAIN control, and continually adjusting both to minimize noise and maximize signals can work wonders on the low frequencies.

The problem is not necessarily propagation.  The problem lies with VHF operators used to a quiet background; SSB operators unwilling to reduce RF GAIN because it renders S-meters invalid; low-hanging antennas (80 meters requires height); and any kind of operator too impatient to work with weak signals (that's where the "mettle" comes in).

Moreover, many neophyte operators, flocking to 80-meters from the higher bands because of solar minima, do not realize that the band is quietest during Midwestern supper hours (when the sun is low but we are not yet in the gray-line zone).  By 8 p.m., the noise floor has risen substantially.

73,

Kent  K9ZTV

PS:  "Mettle":  "a person's ability to cope well with difficulties or to face a demanding situation in a spirited and resilient way."



On 7/27/2018 12:59 PM, someone wrote:
because 80 meters is a winter band, shouldn’t you cancel it until the fall?
my ears are now wearing bandaids from the noise level.☹️



Re: FS Rockmite ][

Grover Cleveland <clevelandg@...>
 

I'll take it. How would you like to be paid?
Let's take this off line.  Cleve landg atgmai ldotc om

Cheers,

Grover

People are so darn judgemental these days.
I can tell just by looking at them.

Sent from me to you.

http://sierratraveler.com



On Thu, Jul 26, 2018 at 3:12 PM Grover Cleveland <clevelandg@...> wrote:
What band?

Cheers,

Grover

People are so darn judgemental these days.
I can tell just by looking at them.

Sent from me to you.

http://sierratraveler.com



On Thu, Jul 26, 2018 at 1:34 PM George H. Gates via Groups.Io <w2bpi1=aol.com@groups.io> wrote:
Built into a small Coke lunch pail box. Final amp is 2SC799. Runs in excess of 1 watt. Down sizing shack. To mni unused lil rigs. Info avalable at QRPME site. Pictures available. $40.00 Shipped. Paypal OK. 72 George/W2BPI


Re: 80 meter net

Kent Trimble, K9ZTV
 

Don't give up so quickly on 80-meters, although trying to work it with 5-watts does test the mettle of the operator.

Last Wednesday, Paul Smith (Kansas) reported that Bill Dekl (Oklahoma), a distance of 113 miles, was 599 and "gangbusters" above a 10-0ver-S9 noise level (and during a solar storm, too).

National Traffic System nets operate year-round on 80 meters with generally satisfactory signals, although obviously not at QRP power levels.  Aside from overhead electrical storms in which no one should operate, the old and proven technique of decreasing one's RF GAIN control, increasing one's AF GAIN control, and continually adjusting both to minimize noise and maximize signals can work wonders on the low frequencies.

The problem is not necessarily propagation.  The problem lies with VHF operators used to a quiet background; SSB operators unwilling to reduce RF GAIN because it renders S-meters invalid; low-hanging antennas (80 meters requires height); and any kind of operator too impatient to work with weak signals (that's where the "mettle" comes in).

Moreover, many neophyte operators, flocking to 80-meters from the higher bands because of solar minima, do not realize that the band is quietest during Midwestern supper hours (when the sun is low but we are not yet in the gray-line zone).  By 8 p.m., the noise floor has risen substantially.

73,

Kent  K9ZTV

PS:  "Mettle":  "a person's ability to cope well with difficulties or to face a demanding situation in a spirited and resilient way."



On 7/27/2018 12:59 PM, someone wrote:
because 80 meters is a winter band, shouldn’t you cancel it until the fall?
my ears are now wearing bandaids from the noise level.☹️



Re: 80 meter net

Paul Smith
 

RGR tnx Ron,

I usually cannot hear Bill on 40 as we are only 100 miles apart as the crow flies. Altho he is gangbusters to me on 80... Who knows with our screwy propagation. , tnx de Paul N0NBD


Sent from Outlook




From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of Gandalf The Gray <ronhogrider92@...>
Sent: Friday, July 27, 2018 6:39 PM
To: main@4SQRP.groups.io
Subject: Re: [4SQRP] 80 meter net
 
understood. i’m giving me ears a rest anyway and staying on 40 for now.
72

Ron wb1hga

On Jul 27, 2018, at 2:23 PM, Paul Smith <n0nbd@...> wrote:

Ron,

We have suspended the net before and had a hard time getting it going again. It may turn into a more local/regional net till quieter time gets here

de Pail N0NBD


Sent from Outlook




From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of Gandalf The Gray <ronhogrider92@...>
Sent: Friday, July 27, 2018 5:59 PM
To: main@4SQRP.groups.io
Subject: Re: [4SQRP] 80 meter net
 
because 80 meters is a winter band, shouldn’t you cancel it until the fall?
my ears are now wearing bandaids from the noise level.☹️

Ron wb1hga

On Jul 27, 2018, at 11:39 AM, Gerry Edson <wa0knw@...> wrote:

I was able to barely copy net control and no others.  Since noise was high and signals low I did not try to check in.
Gerry, WA0KNW

On Wed, Jul 25, 2018 at 8:52 PM Paul Smith <n0nbd@...> wrote:

The net was short and sweet 830 to 839 I worked Bill KV6Z he was 599. Noise was 10 over so Bills signal was gangbusters maybe better next week de Paul N0NBD


Sent from Outlook


Virus-free. www.avg.com


Re: 80 meter net

Gandalf The Gray <ronhogrider92@...>
 

understood. i’m giving me ears a rest anyway and staying on 40 for now.
72

Ron wb1hga

On Jul 27, 2018, at 2:23 PM, Paul Smith <n0nbd@...> wrote:

Ron,

We have suspended the net before and had a hard time getting it going again. It may turn into a more local/regional net till quieter time gets here

de Pail N0NBD


Sent from Outlook




From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of Gandalf The Gray <ronhogrider92@...>
Sent: Friday, July 27, 2018 5:59 PM
To: main@4SQRP.groups.io
Subject: Re: [4SQRP] 80 meter net
 
because 80 meters is a winter band, shouldn’t you cancel it until the fall?
my ears are now wearing bandaids from the noise level.☹️

Ron wb1hga

On Jul 27, 2018, at 11:39 AM, Gerry Edson <wa0knw@...> wrote:

I was able to barely copy net control and no others.  Since noise was high and signals low I did not try to check in.
Gerry, WA0KNW

On Wed, Jul 25, 2018 at 8:52 PM Paul Smith <n0nbd@...> wrote:

The net was short and sweet 830 to 839 I worked Bill KV6Z he was 599. Noise was 10 over so Bills signal was gangbusters maybe better next week de Paul N0NBD


Sent from Outlook


Virus-free. www.avg.com


Re: 80 meter net

Paul Smith
 

Ron,

We have suspended the net before and had a hard time getting it going again. It may turn into a more local/regional net till quieter time gets here

de Pail N0NBD


Sent from Outlook




From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of Gandalf The Gray <ronhogrider92@...>
Sent: Friday, July 27, 2018 5:59 PM
To: main@4SQRP.groups.io
Subject: Re: [4SQRP] 80 meter net
 
because 80 meters is a winter band, shouldn’t you cancel it until the fall?
my ears are now wearing bandaids from the noise level.☹️

Ron wb1hga

On Jul 27, 2018, at 11:39 AM, Gerry Edson <wa0knw@...> wrote:

I was able to barely copy net control and no others.  Since noise was high and signals low I did not try to check in.
Gerry, WA0KNW

On Wed, Jul 25, 2018 at 8:52 PM Paul Smith <n0nbd@...> wrote:

The net was short and sweet 830 to 839 I worked Bill KV6Z he was 599. Noise was 10 over so Bills signal was gangbusters maybe better next week de Paul N0NBD


Sent from Outlook


Virus-free. www.avg.com


Re: 80 meter net

Gandalf The Gray <ronhogrider92@...>
 

because 80 meters is a winter band, shouldn’t you cancel it until the fall?
my ears are now wearing bandaids from the noise level.☹️

Ron wb1hga

On Jul 27, 2018, at 11:39 AM, Gerry Edson <wa0knw@...> wrote:

I was able to barely copy net control and no others.  Since noise was high and signals low I did not try to check in.
Gerry, WA0KNW

On Wed, Jul 25, 2018 at 8:52 PM Paul Smith <n0nbd@...> wrote:

The net was short and sweet 830 to 839 I worked Bill KV6Z he was 599. Noise was 10 over so Bills signal was gangbusters maybe better next week de Paul N0NBD


Sent from Outlook


Virus-free. www.avg.com


Re: 80 meter net

Gerry Edson
 

I was able to barely copy net control and no others.  Since noise was high and signals low I did not try to check in.
Gerry, WA0KNW

On Wed, Jul 25, 2018 at 8:52 PM Paul Smith <n0nbd@...> wrote:

The net was short and sweet 830 to 839 I worked Bill KV6Z he was 599. Noise was 10 over so Bills signal was gangbusters maybe better next week de Paul N0NBD


Sent from Outlook


Virus-free. www.avg.com


Re: Murania Audio

Everett Catlin
 

Thanks for the incite. I only wound 27 instead of 37 turn and am going to re wire the antenna coil. I will also change the loop to your suggested size. Still I have had a basket of fun with it Great kit Dave
73
everett catlin n5mzx

On Friday, July 27, 2018, 12:30:10 PM UTC, nm0s_qrp via Groups.Io <ai9e_qrp@...> wrote:


I had a chance to check out a Murania that one of out builders had put together, that he reported low audio.  On examining it, I found that the regeneration loop was too large, and the receiver was in full oscillation.

When the receiver is oscillating, it makes a large RF signal that is detected in the receiver IC, and drives down the AGC voltage.  This cuts the gain of the IC.  So, to set up the regen, the loop needs to be about the diameter of a pencil, no larger, and exactly perpendicular to the board, and to the ferrite rod.  That is neutral feedback.  If you then twist it slightly either way, it will increase or decrease the feedback.  It is hard to hear a change in volume with strong stations, because the AGC flattens out the volume.  If you hear whistles as you turn the tuning knob, it is oscillating, and the regeneration is too high.

Hopefully this helps some other builder!

73 Dave NM0S


Re: FS Rockmite ][

George H. Gates
 

New I would forget something. 40 meters. 7030. 72 Geo/W2BPI



Sent from my Samsung Galaxy smartphone.


Murania Audio

nm0s_qrp <ai9e_qrp@...>
 

I had a chance to check out a Murania that one of out builders had put together, that he reported low audio.  On examining it, I found that the regeneration loop was too large, and the receiver was in full oscillation.

When the receiver is oscillating, it makes a large RF signal that is detected in the receiver IC, and drives down the AGC voltage.  This cuts the gain of the IC.  So, to set up the regen, the loop needs to be about the diameter of a pencil, no larger, and exactly perpendicular to the board, and to the ferrite rod.  That is neutral feedback.  If you then twist it slightly either way, it will increase or decrease the feedback.  It is hard to hear a change in volume with strong stations, because the AGC flattens out the volume.  If you hear whistles as you turn the tuning knob, it is oscillating, and the regeneration is too high.

Hopefully this helps some other builder!

73 Dave NM0S


Re: FS Rockmite ][

Grover Cleveland <clevelandg@...>
 

What band?

Cheers,

Grover

People are so darn judgemental these days.
I can tell just by looking at them.

Sent from me to you.

http://sierratraveler.com



On Thu, Jul 26, 2018 at 1:34 PM George H. Gates via Groups.Io <w2bpi1=aol.com@groups.io> wrote:
Built into a small Coke lunch pail box. Final amp is 2SC799. Runs in excess of 1 watt. Down sizing shack. To mni unused lil rigs. Info avalable at QRPME site. Pictures available. $40.00 Shipped. Paypal OK. 72 George/W2BPI