Date   

Re: Wednesday Evening 40 and 80 meter Nets - Wed, 01/30/2019 #cal-notice

Daniel Reynolds
 

My $0.02.

Your best time to convene both regionally and cross country on 40m will depend on local sunset. In the winter months, that's going to be closer to 5-6pm. Much later in the summer (8-9pm). 80m will be the next best option about an hour after local sunset. The grey line is your friend as a QRP op. 

73,
Daniel/AA0NI
(On DMR these days ... listening mostly ... between work and family obligations)


Re: Murania Kits FS

Johnny AC0BQ
 

Good Morning Lauri
We are very sorry to hear of Greg’s passing.
Our thoughts and prayers will be with you and your family.

As for the radio items you want to sell,
You are more than welcome to post them here on the list.

If your not sure what some items are,
Send a picture and someone will
Be glad to assist you.

Very 73
Johnny AC0BQ 
Again we’re sorry for your loss.

On Thu, Jan 31, 2019 at 8:09 AM Greg Mayberry <gregab5px@...> wrote:
Hello all,

I'm writing to let you know that Greg passed away last week of colon cancer, so I'll remove him from this list soon. If any of you know where I can sell some of his radios please let me know.
On another uncomfortable note, just get your colonoscopies. You do not want what he had. He was only 55.

Blessings,
Lauri 

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


Re: 80 m net

Johnny AC0BQ
 

Gm Karl
I was running 10 watts at 7:40,
But I cut back to 5 watts at 8:30.
Thanks for the report.
72
Johnny AC0BQ 

On Thu, Jan 31, 2019 at 8:37 AM Karl Schwab via Groups.Io <ktschwab=yahoo.com@groups.io> wrote:
Hi Johnny, 

I heard you on 80m at 9:00 EST here in MI Weds, you were about a 339.  What power were you using?  de Karl, KO8S

On ‎Wednesday‎, ‎January‎ ‎30‎, ‎2019‎ ‎09‎:‎48‎:‎52‎ ‎PM‎ ‎EST, Johnny Matlock <jomatlock@...> wrote:


Ge Group 
I got on at around 7:40 and called cq just to test the waters. 
I got a quick reply from a station in TN. 
The main difference i noticed was lower a lower qrn level at this time? 

My results at 8:30 was Chas W2SH and he was very weak. 
I'm off duty next week as NCS due to my other monthly commitment, but 
I am thinking if trying the next at 7:30 local or 1:30 z in two weeks. 

Thanks 
72 Johnny AC0BQ

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


Re: 80 m net

Karl Schwab
 

Hi Johnny, 

I heard you on 80m at 9:00 EST here in MI Weds, you were about a 339.  What power were you using?  de Karl, KO8S

On ‎Wednesday‎, ‎January‎ ‎30‎, ‎2019‎ ‎09‎:‎48‎:‎52‎ ‎PM‎ ‎EST, Johnny Matlock <jomatlock@...> wrote:


Ge Group 
I got on at around 7:40 and called cq just to test the waters. 
I got a quick reply from a station in TN. 
The main difference i noticed was lower a lower qrn level at this time? 

My results at 8:30 was Chas W2SH and he was very weak. 
I'm off duty next week as NCS due to my other monthly commitment, but 
I am thinking if trying the next at 7:30 local or 1:30 z in two weeks. 

Thanks 
72 Johnny AC0BQ


Re: Murania Kits FS

Greg Mayberry <gregab5px@...>
 

Hello all,

I'm writing to let you know that Greg passed away last week of colon cancer, so I'll remove him from this list soon. If any of you know where I can sell some of his radios please let me know.
On another uncomfortable note, just get your colonoscopies. You do not want what he had. He was only 55.

Blessings,
Lauri 


late check in

Robert
 

THANKS TO WAYNE N9EGT, WHO CHECKED IN A LITTLE LATE BUT BETTER LATE THAN NEVER HI HI

73'S

BERT

N0YJ


DMR NET

Robert
 

THANKS TO ALL OF TONIGHT'S CHECK INS

AC0BQ JOHNNY

WW9H JIM

KV6Z BILL

WG5F ED

NK80 CHARLES

N0TGR DICK

KD9MDL BILL

73'S

BERT

N0YJ


I HOPE TO HEAR FROM YOU ALL NEXT WEEK


Re: 40m & 80m nets

Paul Goemans
 

So,
  Nothing heard on 40 meters.
  Started 15 minutes early calling CQ on 80 meters, but got no response. The Reverse Beacon Network spotted me a bunch of times, mostly East and West coasts. At net time no net heard on 80 meters.
 
Paul Goemans WA9PWP
Stoughton, WI
 

From: w2sh@...
Sent: Wednesday, January 30, 2019 8:48 PM
To: 4SQRP@groups.io
Subject: [4SQRP] 40m & 80m nets
 
Was a couple of minutes late getting tuned up on 40m, but nothing was heard.
 
80m was a different story.  ACØBQ had the best signal I've heard from him this season, RST 579 most of the time with QSB down to 549.  I only got a 339 so condx not so great there.
 
Temp now plus 6 in NJ, but that's probably roasty toasty compared to you guys.
 
72,
 
Charles (aka Chas), W2SH


Re: 40m Net

John - KK4ITX
 

Bill,

Got in around 9:10 EST........ no detectable action.  80 was not any better, must be all the RF is getting frozen and it will thaw out and become QRN in March ?

Worth a try, thanks for your effort.

John
KK4ITX


From: dekle <dekle@...>
To: main@4SQRP.groups.io
Sent: Wednesday, January 30, 2019 9:28 PM
Subject: [4SQRP] 40m Net

Got 2 QNIs tonight:

K4VIG     Gary     TN
AB4QL    Barry    AL

There may have been a 3rd that I just couldn't pull out.

Thanks all
73
Bill
KV6Z


Re: RF Gain control

Carl Gansen
 

I agree on using the RF gain also.  There is little to gain by pumping extra noise into your ears.
In fact, on some of the newer QRP rigs with SDR or  SDR-IFs reducing the noise into the ADC
seems to make an improvement in the effectiveness of the digital algorithms.

I do quite a bit of QRP on 160M and in contests like the recent Stew Perry distance challenge
you need to ride the RF gain with all of those huge signals flying about.  I had a lot of fun
as a QRP entry in that one again this year with my Argonaut 6.  

72
Carl - WB0CFF


Re: 40m Net

Jeff Logullo N0̸MII
 

Heard nothing, but thanks for running the net! I’ll keep trying :-)

On Jan 30, 2019, at 8:28 PM, dekle <dekle@...> wrote:

Got 2 QNIs tonight:

K4VIG     Gary     TN
AB4QL    Barry    AL

There may have been a 3rd that I just couldn't pull out.

Thanks all
73
Bill
KV6Z


--
Jeff N0̷MII


80 m net

Johnny AC0BQ
 

Ge Group 
I got on at around 7:40 and called cq just to test the waters. 
I got a quick reply from a station in TN. 
The main difference i noticed was lower a lower qrn level at this time? 

My results at 8:30 was Chas W2SH and he was very weak. 
I'm off duty next week as NCS due to my other monthly commitment, but 
I am thinking if trying the next at 7:30 local or 1:30 z in two weeks. 

Thanks 
72 Johnny AC0BQ


40m & 80m nets

w2sh@...
 

Was a couple of minutes late getting tuned up on 40m, but nothing was heard.

80m was a different story.  ACØBQ had the best signal I've heard from him this season, RST 579 most of the time with QSB down to 549.  I only got a 339 so condx not so great there.

Temp now plus 6 in NJ, but that's probably roasty toasty compared to you guys.

72,

Charles (aka Chas), W2SH


40m Net

dekle <dekle@...>
 

Got 2 QNIs tonight:

K4VIG     Gary     TN
AB4QL    Barry    AL

There may have been a 3rd that I just couldn't pull out.

Thanks all
73
Bill
KV6Z


Re: 40m Net

Johnny AC0BQ
 

Hello Chas
Well, I snagged A Tn station on 
My first CQ!
When you get back home we can give it a try at earlier time.
About the earliest I can make it is 7:00
Pm due to my late arrivals from work!
73
Stay Warm.
Johnny AC0BQ 

On Wed, Jan 30, 2019 at 8:17 PM Charles W. Powell via Groups.Io <doctorcwp=yahoo.com@groups.io> wrote:
Good idea Johnny.  Sorry I can’t be around to check tonight.  Funny thing: I have chatted with Paul WA9PWP just about every week before net time, and at least at my end, I have a great signal from him.  By the time the 80m net rolls around I even have difficulty copying Paul.  I think we should experiment with this because over the summer I regularly copied Paul N0NBD on 80m, who is about 70 miles south of me.  I haven’t heard Paul in MONTHS.  In fact, we had difficulty hearing each other to exchange SKCC numbers, so he wasn’t on my list at all last month.  It’s definitely a challenge.  Johnny AC0BQ is almost exactly the same distance, measuring out at 68 miles from my home in Louisburg.

72,

Chas - NK8O


On Jan 30, 2019, at 5:56 PM, Johnny Matlock <jomatlock@...> wrote:

Ge group
I'm listening at 3.564 just to see if I can detect any difference in 80 at a earlier time. 
Call if you can we will give it a shot.
72 
Johnny AC0BQ


On Wed, Jan 30, 2019 at 11:54 AM WA0ITP <wa0itp@...> wrote:
Good observations Chas, and FB coaching on the RF gain control.  Yes it's an excellent way to run a receiver.

Perhaps a solution for net time would be to specify Zulu and let CST and CDT wander around on their own.  IIRC, at one time, the 80M net began at 0130z, and the 40M net convened earlier, at 0100z I think.  Prop was better then tho.

Chas, I'd like to experiment on a new starting time, but I'll be out of town until mid, maybe late  Feb with no rig.  Perhaps others want to try out the bands at new times.

Another way of increasing checkins would be to post notes on various reflectors e.g QRP-L, QRP-Tech, KQ0RP, SLQS and any other groups that come to mind.

Let's keep plugging away and make the nets better. 
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
On 1/30/2019 1:19 AM, Charles W. Powell via Groups.Io wrote:
Bill,

I think the problem is just at 40 meters is WAY too long at 2000 central during the winter. The net *might* work at 1900, and when I first started with these nets, the first one started at 1900.  The times were moved back for summer, because it was still daylight and the bands were too short, but they never were adjusted when winter came back around.  I think that was 2 years ago, but I wouldn’t swear to it.  Remember that over the summer, even though my logins were sporadic, I made it into just about every weekly net (when I was available) on both 40 and 80.  Then winter came with shorter days and the time change.  Effectively, we go around four hours later into darkness hours during the winter months.

So I know this only suggests a solution (different start time) that may or may not work with current band conditions.  If someone is available, I’d be happy to experiment with folks to see what times, if any, work, but I can’t do it this week because I am out of town.  I could be part of some experimentation next week on the 6th of February.  We could coordinate through the talkgroup.

Another *possible* change that won’t work for a lot of folks is to go to 160m.  I find 160 very challenging because 1) some of my radios don’t have that band, 2) antennas are a problem, and 3) the NOISE on 160 is impressive.

# Tangent.  The following is a tangent.  Stop now if you’ve already had enough! #

Having said all that, I discovered working last month that what “the old timers” say about dealing with noise.  We are all used to cranking the AF gain to try to hear signals.  That works fine on upper bands, but on 60, 80, and 160, the adjustment should be primarily through the RF gain.  Why? Let me put it this way: If you have S9 noise and you turn up the AF gain on the radio, the noise becomes overwhelming.  You know there is a signal that you can hear, but the noise is so loud, you can’t listen for more than a few minutes before you want to throw your headphones across the room.  If you reduce the RF gain to where the noise is at a tolerable level, then that signal is suddenly audible at a reasonable level over the noise.  You have optimized your signal-to-noise ratio by reducing the noise in the mix.  You might ask, “Doesn’t this reduce the sensitivity of the receiver?”  Well, yes, it does.  But if your noise is S-whatever, everything below that level is useless to you. So why amplify the noise and increase your level of fatigue?  The only thing to remember is to turn the RF gain back up when you change bands.  Otherwise you’ll think the front-end of your radio is blown!

The point?  Well, if you are trying to check into the 80 meter net, you know there are signals you can hear, and the noise is overwhelming, try this technique.

# End tangent #

72,

Chas - NK8O

On Jan 28, 2019, at 3:37 PM, Johnny Matlock <jomatlock@...> wrote:

Ge Bill
I have been considering moving the net to a earlier time slot.
I would be lucky to be home in time to call at 7:00?
What do you think about a time change?
73
Johnny AC0BQ 

On Mon, Jan 28, 2019 at 2:46 PM dekle <dekle@...> wrote:
Hello all.
I'm looking for someone to take over the 40m Wednesday Night CW Net.
I haven't had much luck lately and was wondering if someone else would be able to make more contacts than I have been able to.
Thanks.
Bill
KV6Z


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





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


Re: 40m Net

Charles W. Powell
 

Good idea Johnny.  Sorry I can’t be around to check tonight.  Funny thing: I have chatted with Paul WA9PWP just about every week before net time, and at least at my end, I have a great signal from him.  By the time the 80m net rolls around I even have difficulty copying Paul.  I think we should experiment with this because over the summer I regularly copied Paul N0NBD on 80m, who is about 70 miles south of me.  I haven’t heard Paul in MONTHS.  In fact, we had difficulty hearing each other to exchange SKCC numbers, so he wasn’t on my list at all last month.  It’s definitely a challenge.  Johnny AC0BQ is almost exactly the same distance, measuring out at 68 miles from my home in Louisburg.

72,

Chas - NK8O


On Jan 30, 2019, at 5:56 PM, Johnny Matlock <jomatlock@...> wrote:

Ge group
I'm listening at 3.564 just to see if I can detect any difference in 80 at a earlier time. 
Call if you can we will give it a shot.
72 
Johnny AC0BQ


On Wed, Jan 30, 2019 at 11:54 AM WA0ITP <wa0itp@...> wrote:
Good observations Chas, and FB coaching on the RF gain control.  Yes it's an excellent way to run a receiver.

Perhaps a solution for net time would be to specify Zulu and let CST and CDT wander around on their own.  IIRC, at one time, the 80M net began at 0130z, and the 40M net convened earlier, at 0100z I think.  Prop was better then tho.

Chas, I'd like to experiment on a new starting time, but I'll be out of town until mid, maybe late  Feb with no rig.  Perhaps others want to try out the bands at new times.

Another way of increasing checkins would be to post notes on various reflectors e.g QRP-L, QRP-Tech, KQ0RP, SLQS and any other groups that come to mind.

Let's keep plugging away and make the nets better. 
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
On 1/30/2019 1:19 AM, Charles W. Powell via Groups.Io wrote:
Bill,

I think the problem is just at 40 meters is WAY too long at 2000 central during the winter. The net *might* work at 1900, and when I first started with these nets, the first one started at 1900.  The times were moved back for summer, because it was still daylight and the bands were too short, but they never were adjusted when winter came back around.  I think that was 2 years ago, but I wouldn’t swear to it.  Remember that over the summer, even though my logins were sporadic, I made it into just about every weekly net (when I was available) on both 40 and 80.  Then winter came with shorter days and the time change.  Effectively, we go around four hours later into darkness hours during the winter months.

So I know this only suggests a solution (different start time) that may or may not work with current band conditions.  If someone is available, I’d be happy to experiment with folks to see what times, if any, work, but I can’t do it this week because I am out of town.  I could be part of some experimentation next week on the 6th of February.  We could coordinate through the talkgroup.

Another *possible* change that won’t work for a lot of folks is to go to 160m.  I find 160 very challenging because 1) some of my radios don’t have that band, 2) antennas are a problem, and 3) the NOISE on 160 is impressive.

# Tangent.  The following is a tangent.  Stop now if you’ve already had enough! #

Having said all that, I discovered working last month that what “the old timers” say about dealing with noise.  We are all used to cranking the AF gain to try to hear signals.  That works fine on upper bands, but on 60, 80, and 160, the adjustment should be primarily through the RF gain.  Why? Let me put it this way: If you have S9 noise and you turn up the AF gain on the radio, the noise becomes overwhelming.  You know there is a signal that you can hear, but the noise is so loud, you can’t listen for more than a few minutes before you want to throw your headphones across the room.  If you reduce the RF gain to where the noise is at a tolerable level, then that signal is suddenly audible at a reasonable level over the noise.  You have optimized your signal-to-noise ratio by reducing the noise in the mix.  You might ask, “Doesn’t this reduce the sensitivity of the receiver?”  Well, yes, it does.  But if your noise is S-whatever, everything below that level is useless to you. So why amplify the noise and increase your level of fatigue?  The only thing to remember is to turn the RF gain back up when you change bands.  Otherwise you’ll think the front-end of your radio is blown!

The point?  Well, if you are trying to check into the 80 meter net, you know there are signals you can hear, and the noise is overwhelming, try this technique.

# End tangent #

72,

Chas - NK8O

On Jan 28, 2019, at 3:37 PM, Johnny Matlock <jomatlock@...> wrote:

Ge Bill
I have been considering moving the net to a earlier time slot.
I would be lucky to be home in time to call at 7:00?
What do you think about a time change?
73
Johnny AC0BQ 

On Mon, Jan 28, 2019 at 2:46 PM dekle <dekle@...> wrote:
Hello all.
I'm looking for someone to take over the 40m Wednesday Night CW Net.
I haven't had much luck lately and was wondering if someone else would be able to make more contacts than I have been able to.
Thanks.
Bill
KV6Z


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






Wednesday Evening 40 and 80 meter Nets - Wed, 01/30/2019 #cal-notice

main@4SQRP.groups.io Calendar <noreply@...>
 

Wednesday Evening 40 and 80 meter Nets

When:
Wednesday, 30 January 2019
8:00pm to 9:00pm
(GMT-06:00) America/Chicago

Where:
40 and 80 Meters

Description:
The 40 Meter Net will be at 8:00 pm central time  on 7.122 +-. QRM
NCS will be Bill KV6Z.

Wednesday evening 80 Meter CW Net. will be at  (8:30PM Central Time Wednesday). 
The 80 meter net will be called on 3.564 MHz +/- QRM.
Net control operators are Johnny AC0BQ or Paul N0NBD.

* NEW *  Wednesday evening DMR Voice Net will be at (Thursday) 0300 UTC (9:00PM Central Time Wednesday/)
Four States QRP has a Brandmeister DMR Talk Group (TG31654). Join us to discuss QRP, ask questions, or just ragchew. The Wednesday net is a directed net  but any other time you may use the Talk Group to chat with other QRPers.
Net Control operator is Bert NØYJ.


Re: 40m Net

Johnny AC0BQ
 

Ge group
I'm listening at 3.564 just to see if I can detect any difference in 80 at a earlier time. 
Call if you can we will give it a shot.
72 
Johnny AC0BQ


On Wed, Jan 30, 2019 at 11:54 AM WA0ITP <wa0itp@...> wrote:
Good observations Chas, and FB coaching on the RF gain control.  Yes it's an excellent way to run a receiver.

Perhaps a solution for net time would be to specify Zulu and let CST and CDT wander around on their own.  IIRC, at one time, the 80M net began at 0130z, and the 40M net convened earlier, at 0100z I think.  Prop was better then tho.

Chas, I'd like to experiment on a new starting time, but I'll be out of town until mid, maybe late  Feb with no rig.  Perhaps others want to try out the bands at new times.

Another way of increasing checkins would be to post notes on various reflectors e.g QRP-L, QRP-Tech, KQ0RP, SLQS and any other groups that come to mind.

Let's keep plugging away and make the nets better. 
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
On 1/30/2019 1:19 AM, Charles W. Powell via Groups.Io wrote:
Bill,

I think the problem is just at 40 meters is WAY too long at 2000 central during the winter. The net *might* work at 1900, and when I first started with these nets, the first one started at 1900.  The times were moved back for summer, because it was still daylight and the bands were too short, but they never were adjusted when winter came back around.  I think that was 2 years ago, but I wouldn’t swear to it.  Remember that over the summer, even though my logins were sporadic, I made it into just about every weekly net (when I was available) on both 40 and 80.  Then winter came with shorter days and the time change.  Effectively, we go around four hours later into darkness hours during the winter months.

So I know this only suggests a solution (different start time) that may or may not work with current band conditions.  If someone is available, I’d be happy to experiment with folks to see what times, if any, work, but I can’t do it this week because I am out of town.  I could be part of some experimentation next week on the 6th of February.  We could coordinate through the talkgroup.

Another *possible* change that won’t work for a lot of folks is to go to 160m.  I find 160 very challenging because 1) some of my radios don’t have that band, 2) antennas are a problem, and 3) the NOISE on 160 is impressive.

# Tangent.  The following is a tangent.  Stop now if you’ve already had enough! #

Having said all that, I discovered working last month that what “the old timers” say about dealing with noise.  We are all used to cranking the AF gain to try to hear signals.  That works fine on upper bands, but on 60, 80, and 160, the adjustment should be primarily through the RF gain.  Why? Let me put it this way: If you have S9 noise and you turn up the AF gain on the radio, the noise becomes overwhelming.  You know there is a signal that you can hear, but the noise is so loud, you can’t listen for more than a few minutes before you want to throw your headphones across the room.  If you reduce the RF gain to where the noise is at a tolerable level, then that signal is suddenly audible at a reasonable level over the noise.  You have optimized your signal-to-noise ratio by reducing the noise in the mix.  You might ask, “Doesn’t this reduce the sensitivity of the receiver?”  Well, yes, it does.  But if your noise is S-whatever, everything below that level is useless to you. So why amplify the noise and increase your level of fatigue?  The only thing to remember is to turn the RF gain back up when you change bands.  Otherwise you’ll think the front-end of your radio is blown!

The point?  Well, if you are trying to check into the 80 meter net, you know there are signals you can hear, and the noise is overwhelming, try this technique.

# End tangent #

72,

Chas - NK8O

On Jan 28, 2019, at 3:37 PM, Johnny Matlock <jomatlock@...> wrote:

Ge Bill
I have been considering moving the net to a earlier time slot.
I would be lucky to be home in time to call at 7:00?
What do you think about a time change?
73
Johnny AC0BQ 

On Mon, Jan 28, 2019 at 2:46 PM dekle <dekle@...> wrote:
Hello all.
I'm looking for someone to take over the 40m Wednesday Night CW Net.
I haven't had much luck lately and was wondering if someone else would be able to make more contacts than I have been able to.
Thanks.
Bill
KV6Z


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



Re: RF Gain control

Charles W. Powell
 

An opportunity to design a mod for the radio?

72,

Chas - NK8O

On Jan 30, 2019, at 12:08 PM, Jim Pruitt <jpruitt67@...> wrote:

The idea is a good one and has been for decades. The one question I had was...what do we use with most of the current homebrew and direct conversion rigs that have no separate RF gain controls to allow us to do this magic?

Thank you.

Jim Pruitt
WA7DUY


On 1/29/2019 11:19 PM, Charles W. Powell via Groups.Io wrote:
Bill,

Having said all that, I discovered working last month that what “the old timers” say about dealing with noise. We are all used to cranking the AF gain to try to hear signals. That works fine on upper bands, but on 60, 80, and 160, the adjustment should be primarily through the RF gain. Why? Let me put it this way: If you have S9 noise and you turn up the AF gain on the radio, the noise becomes overwhelming. You know there is a signal that you can hear, but the noise is so loud, you can’t listen for more than a few minutes before you want to throw your headphones across the room. If you reduce the RF gain to where the noise is at a tolerable level, then that signal is suddenly audible at a reasonable level over the noise. You have optimized your signal-to-noise ratio by reducing the noise in the mix. You might ask, “Doesn’t this reduce the sensitivity of the receiver?” Well, yes, it does. But if your noise is S-whatever, everything below that level is useless to you. So why amplify the noise and increase your level of fatigue? The only thing to remember is to turn the RF gain back up when you change bands. Otherwise you’ll think the front-end of your radio is blown!

Chas - NK8O



Re: RF Gain control

Chris Howard w0ep
 

An external step attenuator?

On 1/30/19 2:08 PM, Jim Pruitt wrote:
The idea is a good one and has been for decades.  The one question I had was...what do we use with most of the current homebrew and direct conversion rigs that have no separate RF gain controls to allow us to do this magic?

Thank you.

Jim Pruitt
WA7DUY


On 1/29/2019 11:19 PM, Charles W. Powell via Groups.Io wrote:
Bill,

Having said all that, I discovered working last month that what “the old timers” say about dealing with noise.  We are all used to cranking the AF gain to try to hear signals.  That works fine on upper bands, but on 60, 80, and 160, the adjustment should be primarily through the RF gain.  Why? Let me put it this way: If you have S9 noise and you turn up the AF gain on the radio, the noise becomes overwhelming.  You know there is a signal that you can hear, but the noise is so loud, you can’t listen for more than a few minutes before you want to throw your headphones across the room.  If you reduce the RF gain to where the noise is at a tolerable level, then that signal is suddenly audible at a reasonable level over the noise.  You have optimized your signal-to-noise ratio by reducing the noise in the mix.  You might ask, “Doesn’t this reduce the sensitivity of the receiver?”  Well, yes, it does.  But if your noise is S-whatever, everything below that level is useless to you. So why amplify the noise and increase your level of fatigue?  The only thing to remember is to turn the RF gain back up when you change bands.  Otherwise you’ll think the front-end of your radio is blown!

Chas - NK8O