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RFI issues

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Jim Brown-10

Re: RFI issues

On 2/19/2020 7:12 AM, Gmail - George wrote:
> Andreas,
> You might want to go to the station and talk the the Chief Engineer. If he
> is the nice-guygal type CE he will help you (Not al CEs are the nice kind
> but most are).

Maybe in 1960, but no way in 2020. Besides, it is quite unlikely that
these stations are causing your problem, but as has been observed, a
simple LPF inserted in the antenna will prevent those TX from hitting
your RX.

George is right on about antenna directivity and the spectrum analyzer
display.

As I observed earlier, the FAR more likely source(s) of your noise are
dozens of switch-mode power supplies in your home and the homes of each
of your neighbors, other equipment that includes power control
electronics, and equipment that includes microprocessors.

This link can query the FCC website to see technical details for any
broadcast station in the US. https://www.fcc.gov/media/radio/am-query

73, Jim K9YC
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Jim Brown-10

Re: RFI issues

In reply to this post by Elecraft mailing list

On 2/18/2020 4:38 PM, Andreas Wachter via Elecraft wrote:
> Yes, I did run the K3 off of a battery and pulled the main AC breaker. Didn’t make any difference. Thus my suspicion that the RFI is related to the 208 kW ERP TV station (and/or 63 kW EPR FM station) which are within 1.6 miles and in direct line of sight.

Do you have neighbors? Did you pull their breakers at the same time?

Do you have a UPS? They continue to run without power, so both they and
any connected equipment can create noise.

Did you take the time to study the link I posted?

73, Jim K9YC
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Elecraft mailing list

Re: RFI issues

I once had a noise issue and I used my KX3 roving about the neighborhood to find it. Actually, I found a number of loud noise sources doing that as I moved around. It seems that if the noise level is fairly constant as you move around the area but will within the same general distance from the TV/FM station antennas you could isolate the source as those antennas or something else.

73, phil, K7PEH

> On Feb 20, 2020, at 9:42 AM, Jim Brown <[hidden email]> wrote:
>
> On 2/18/2020 4:38 PM, Andreas Wachter via Elecraft wrote:
>> Yes, I did run the K3 off of a battery and pulled the main AC breaker. Didn’t make any difference. Thus my suspicion that the RFI is related to the 208 kW ERP TV station (and/or 63 kW EPR FM station) which are within 1.6 miles and in direct line of sight.
>
> Do you have neighbors? Did you pull their breakers at the same time?
>
> Do you have a UPS? They continue to run without power, so both they and any connected equipment can create noise.
>
> Did you take the time to study the link I posted?
>
> 73, Jim K9YC
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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k6dgw

Re: RFI issues

In reply to this post by Jim Brown-10

Andreas: The probability that your noise is due to the TV or FM station
is extremely low [like really zero]. Meadow Lakes CA is the "TV/FM
capital" for the southern Central Valley [Fresno], and my 2m HT goes
full bars about 2 miles from the complex on both FM and AM [aeronautical
band]. When at the repeater site next to a 300 KW digital TV station,
my comrade's HT won't break my squelch. It is just front end overload
from way out of band, there is no discernible noise.

The number of noise makers we normally see in urban/suburban areas is
almost countably infinite. In addition to the 24/7 constant hash from
SMPS, I have a variety of intermittant noise sources that come and go
with periods ranging from a few seconds [probably the A/C motor starting
at the gym behind us] to an hour or so. One is a sequence of
synchronized carriers on the waterfall about 7 kHz apart that last for a
few seconds and then burst into roman candles that fog up the WF and
then fade in 2 or 3 seconds. Neighbor 4 doors down the street just
installed rooftop solar which I can now see on the P3 on 160 and 80. [:=(

K9YC's RFI notes pretty much cover searching for and fixing RFI.

73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 2/20/2020 9:42 AM, Jim Brown wrote:

> On 2/18/2020 4:38 PM, Andreas Wachter via Elecraft wrote:
>> Yes, I did run the K3 off of a battery and pulled the main AC
>> breaker. Didn’t make any difference. Thus my suspicion that the RFI
>> is related to the 208 kW ERP TV station (and/or 63 kW EPR FM station)
>> which are within 1.6 miles and in direct line of sight.
>
> Do you have neighbors? Did you pull their breakers at the same time?
>
> Do you have a UPS? They continue to run without power, so both they
> and any connected equipment can create noise.
>
> Did you take the time to study the link I posted?
>
> 73, Jim K9YC

W8JH

Re: RFI issues

In reply to this post by ke9uw

ke9uw wrote
> We bought a new Keurig coffee maker which does a pot or also the pods. It
> puts a huge noise out to the ham frequencies. Have to turn it off to get
> on 80M

That is a serious conflict!

80m morning greyline without caffeine, people cannot live this way!!

-----
73,

Joe, W8JH

K3s, KPA 500, KAT 500 and KX3 happy user.
--
Sent from: http://elecraft.365791.n2.nabble.com/
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73,

Joe, W8JH

K3s, KPA 500, KAT 500 and KX3 happy user.

K9MA

Re: RFI issues

In reply to this post by Elecraft mailing list

It's really important to make sure you're listening to the right source.
One way to do that is to listen to the audio from your home receiver (AM
mode, AGC off, RF gain backed down to avoid overload) while you are
searching. There will be a pattern of fluctuations. When they match, you
have the right source. You can relay the home receiver by phone,
VHF/UHF, etc.

73,
Scott K9MA

On 2/20/2020 11:48, Phil Hystad via Elecraft wrote:

> I once had a noise issue and I used my KX3 roving about the neighborhood to find it. Actually, I found a number of loud noise sources doing that as I moved around. It seems that if the noise level is fairly constant as you move around the area but will within the same general distance from the TV/FM station antennas you could isolate the source as those antennas or something else.
>
> 73, phil, K7PEH
>
>
>> On Feb 20, 2020, at 9:42 AM, Jim Brown <[hidden email]> wrote:
>>
>> On 2/18/2020 4:38 PM, Andreas Wachter via Elecraft wrote:
>>> Yes, I did run the K3 off of a battery and pulled the main AC breaker. Didn’t make any difference. Thus my suspicion that the RFI is related to the 208 kW ERP TV station (and/or 63 kW EPR FM station) which are within 1.6 miles and in direct line of sight.
>> Do you have neighbors? Did you pull their breakers at the same time?
>>
>> Do you have a UPS? They continue to run without power, so both they and any connected equipment can create noise.
>>
>> Did you take the time to study the link I posted?
>>
>> 73, Jim K9YC
>> ______________________________________________________________
>

--
Scott K9MA

[hidden email]

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Vic Rosenthal

Re: RFI issues

In reply to this post by k6dgw

Not so fast. The K3's T/R switch can be overwhelmed by very strong
signals. The result is intermod junk all over the bands. This happened
to me with a 50 kW AM BC signal at about 1000 kHz that is line-of-sight
to my antenna. I don't see why a super-strong VHF signal couldn't have
the same effect.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
On 20-Feb-2020 20:10, Fred Jensen wrote:

> Andreas: The probability that your noise is due to the TV or FM station
> is extremely low [like really zero]. Meadow Lakes CA is the "TV/FM
> capital" for the southern Central Valley [Fresno], and my 2m HT goes
> full bars about 2 miles from the complex on both FM and AM [aeronautical
> band]. When at the repeater site next to a 300 KW digital TV station,
> my comrade's HT won't break my squelch. It is just front end overload
> from way out of band, there is no discernible noise.
>
> The number of noise makers we normally see in urban/suburban areas is
> almost countably infinite. In addition to the 24/7 constant hash from
> SMPS, I have a variety of intermittant noise sources that come and go
> with periods ranging from a few seconds [probably the A/C motor starting
> at the gym behind us] to an hour or so. One is a sequence of
> synchronized carriers on the waterfall about 7 kHz apart that last for a
> few seconds and then burst into roman candles that fog up the WF and
> then fade in 2 or 3 seconds. Neighbor 4 doors down the street just
> installed rooftop solar which I can now see on the P3 on 160 and 80. [:=(
>
> K9YC's RFI notes pretty much cover searching for and fixing RFI.
>
> 73,
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County

K8TE

Re: RFI issues

In reply to this post by Elecraft mailing list

We gave our plasma TV to our parish and I bought my wife a new LED TV so she
could watch her programs and I could operate HF without the horrible noise
from the plasma TV!

73, Bill, K8TE

I still have a neighbor with a noisy plasma TV

--
Sent from: http://elecraft.365791.n2.nabble.com/
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Jim Brown-10

Re: RFI issues

In reply to this post by Vic Rosenthal

On 2/20/2020 10:22 AM, Victor Rosenthal 4X6GP wrote:
> Not so fast. The K3's T/R switch can be overwhelmed by very strong
> signals. The result is intermod junk all over the bands. This happened
> to me with a 50 kW AM BC signal at about 1000 kHz that is line-of-sight
> to my antenna. I don't see why a super-strong VHF signal couldn't have
> the same effect.

AM BC signals are far more likely to cause issues because 1) they are
much closer in frequency (as a percentage) than VHF/UHF, so 2) our
antennas tend to be far less efficient receiving them, and 3) feedline
loss is high at VHF/UHF, due both to normal increase in loss with
frequency and because the feedline is poorly matched to the RX at
VHF/UHF. Also, AM BC transmitters often combine in non-linear junctions
to produce IMD that ON_FREQUENCY in our bands. I first experienced this
more than 60 years ago, when local 5kW stations on 930 kHz and 1470 kHz
put a monster product on 3870 kHz, wiping out the WV AM net on 3890.

The IM often occurs in the TX output stage; because FM and TV TX
antennas are often in close proximity to other BC and 2-way TX sites, it
is common for these TX to include a device called a "circulator" that
prevents signal from another TX to backfeed into their own output stage,
where rectification can occur, but it is far less common for AM stations
to include comparable networks. In addition, of course, rectification
can occur almost anywhere.

73, Jim K9YC
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ke9uw

Re: RFI issues

In reply to this post by W8JH

I still love the coffee maker and would buy it again. I just turn it off after the pot or pod is brewed.

Chuck Jack Hawley
KE9UW

Sent from my iPhone, cjack

> On Feb 20, 2020, at 12:12 PM, W8JH <[hidden email]> wrote:
>
> ke9uw wrote
>> We bought a new Keurig coffee maker which does a pot or also the pods. It
>> puts a huge noise out to the ham frequencies. Have to turn it off to get
>> on 80M
>
> That is a serious conflict!
>
> 80m morning greyline without caffeine, people cannot live this way!!
>
>
>
>
> -----
> 73,
>
> Joe, W8JH
>
> K3s, KPA 500, KAT 500 and KX3 happy user.
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
> ______________________________________________________________
> Elecraft mailing list
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> Message delivered to [hidden email]

Chuck, KE9UW

KeithWE6R

Re: RFI issues

Administrator

In reply to this post by Vic Rosenthal

RF overload can do a lot of things.
Try above and below 12W (8W on 6m) to see if the KPA3 is swamped.
Or an antenna on the RX port (If KXV3 equipped).
Also RF overload can excite any loose connections at the tower site,
rusty metal, fence joints etc.
You are just going to have to sniff around with a portable setup.
Keith WE6R
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Lyn WØLEN

Re: RFI issues

In reply to this post by ke9uw

I've had several of the inexpensive Keurig Pod type, and have never had an issue on any band.

Kitchen is right next door to the shack, and the pot is on all day.

Lyn
W0LEN

-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On Behalf Of hawley, charles j jr
Sent: Thursday, February 20, 2020 2:04 PM
To: W8JH
Cc: [hidden email]
Subject: Re: [Elecraft] RFI issues

I still love the coffee maker and would buy it again. I just turn it off after the pot or pod is brewed.

Chuck Jack Hawley
KE9UW

Sent from my iPhone, cjack

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Jim Brown-10

Re: RFI issues

On 2/21/2020 9:41 AM, Lyn Norstad wrote:
> Kitchen is right next door to the shack, and the pot is on all day.

What matters is distance to antennas, not the shack. The nature of
electrical wiring in your home also matters, because it's that wiring
that radiates any noise produced.

73, Jim K9YC
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Dave New, N8SBE

Re: RFI issues

In reply to this post by Elecraft mailing list

Dave New, N8SBE

Re: RFI issues

In reply to this post by Elecraft mailing list

(Sorry about the previous blank message -- this is now the ONLY
mailgroup I'm subscribed to that refuses HTML-formatted mail, which is
the default setting for my mail client).

It's amazing the things that can cause issues. From my experience:

1) An automatic porch light sensor, the kind that screws in the light
socket and then you screw the porch light bulb into it. It was putting
out broadband hash across several bands, but only at night, when the
light was on.

2) A Mr. Coffee coffee maker that had a little LED clock in the base, so
you could set it to auto-brew in the morning. That little clock also
put out broadband hash, whose tone tended to vary somewhat depending on
what was currently on the display. I had to find it using a portable
radio and finding that the kitchen outlets were 'singing' with the
signal.

3) A doorbell transformer, that was mounted on the side of a light
junction box in the basement, located above a false ceiling panel. The
really annoying aspect was that the transformer didn't seem to be on any
branch circuit. I finally discovered that the previous home owner had
jumpered a couple of branch circuits in the breaker panel (?!), so
turning off only one of the breakers didn't kill power to some outlets.
This circuit was shared with the kitchen dishwasher, etc. outlets, and
apparently they had had breaker trips from the overloaded circuit, so
they just jumpered another breaker in parallel. After running
additional circuits to put the dishwasher and garbage disposal, etc. on
separate circuits (and removing the offending jumpers in the breaker
box), I was finally able to isolate the doorbell transformer, which was
subsequently replaced.

It's been a while since I've done a 'whole house down' survey, and my
noise floor has crept up again. In particular, I have a broadband noise
that is 20 over S9 that wipes out the top half of 80 meters and all of
60 meters. I suspect it is my neighbor's U-Verse system twisted copper
pair uplink which operates on those frequencies.

"The second band is used in upstream and start at 3.75 MHz and end at
5.2 MHz " -- https://adslm.dohrenburg.net/uverse/

It's a never-ending challenge...

Good luck, and 73,

-- Dave, N8SBE
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ke9uw

Re: RFI issues

In reply to this post by Lyn WØLEN

This is the newest one that brews a carafe of 10 cups or does a pod into your mug. I too have had others without any noise, but this new one puts a huge sine wave of noise on the panadapter. I have put ferrite on the line cord which don't affect it. I just turn the thing off after brewing...or wait about 5 minutes and the noise goes away.

Jack BMW Motorcycles
Chuck KE9UW
[hidden email]

Sent from my iPad

> On Feb 21, 2020, at 11:42 AM, Lyn Norstad <[hidden email]> wrote:
>
> I've had several of the inexpensive Keurig Pod type, and have never had an issue on any band.
>
> Kitchen is right next door to the shack, and the pot is on all day.
>
> Lyn
> W0LEN
>
>
> -----Original Message-----
> From: [hidden email] [mailto:[hidden email]] On Behalf Of hawley, charles j jr
> Sent: Thursday, February 20, 2020 2:04 PM
> To: W8JH
> Cc: [hidden email]
> Subject: Re: [Elecraft] RFI issues
>
> I still love the coffee maker and would buy it again. I just turn it off after the pot or pod is brewed.
>
> Chuck Jack Hawley
> KE9UW
>
> Sent from my iPhone, cjack
>
>> On Feb 20, 2020, at 12:12 PM, W8JH <[hidden email]> wrote:
>>
>> ke9uw wrote
>>> We bought a new Keurig coffee maker which does a pot or also the pods. It
>>> puts a huge noise out to the ham frequencies. Have to turn it off to get
>>> on 80M
>>
>> That is a serious conflict!
>>
>> 80m morning greyline without caffeine, people cannot live this way!!
>>
>>
>>
>>
>> -----
>> 73,
>>
>> Joe, W8JH
>>
>> K3s, KPA 500, KAT 500 and KX3 happy user.
>> --
>> Sent from: http://elecraft.365791.n2.nabble.com/
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
> ______________________________________________________________
> Elecraft mailing list
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>
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>

Chuck, KE9UW

Jim Brown-10

Re: RFI issues

On 2/21/2020 3:08 PM, hawley, charles j jr wrote:
> I have put ferrite on the line cord which don't affect it.

Which ferrite? There are dozens of different types. Did you just clamp
one on, or did you wind multiple turns through it as shown in these links?
http://k9yc.com/KillingReceiveNoise.pdf and
http://k9yc.com/KillingRXNoiseVisalia.pdf

If you don't use the "right" ferrite and if you don't wind the "right"
number of turns for the band(s) where you hear the noise, the ferrite
WON'T do anything.

73, Jim K9YC

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Gary K9GS-2

Re: RFI issues

In reply to this post by ke9uw

What's the MODEL number??73,Gary K9GS
-------- Original message --------From: "hawley, charles j jr" <[hidden email]> Date: 2/21/20 5:08 PM (GMT-06:00) To: [hidden email] Cc: [hidden email], W8JH <[hidden email]> Subject: Re: [Elecraft] RFI issues This is the newest one that brews a carafe of 10 cups or does a pod into your mug. I too have had others without any noise, but this new one puts a huge sine wave of noise on the panadapter. I have put ferrite on the line cord which don't affect it. I just turn the thing off after brewing...or wait about 5 minutes and the noise goes away. Jack BMW MotorcyclesChuck [hidden email] from my iPad> On Feb 21, 2020, at 11:42 AM, Lyn Norstad <[hidden email]> wrote:> > I've had several of the inexpensive Keurig Pod type, and have never had an issue on any band.> > Kitchen is right next door to the shack, and the pot is on all day.> > Lyn> W0LEN> > > -----Original Message-----> From: [hidden email] [mailto:[hidden email]] On Behalf Of hawley, charles j jr> Sent: Thursday, February 20, 2020 2:04 PM> To: W8JH> Cc: [hidden email]> Subject: Re: [Elecraft] RFI issues> > I still love the coffee maker and would buy it again. I just turn it off after the pot or pod is brewed.> > Chuck Jack Hawley > KE9UW> > Sent from my iPhone, cjack > >> On Feb 20, 2020, at 12:12 PM, W8JH <[hidden email]> wrote:>> >> ke9uw wrote>>> We bought a new Keurig coffee maker which does a pot or also the pods. It>>> puts a huge noise out to the ham frequencies. Have to turn it off to get>>> on 80M>> >> That is a serious conflict!>> >> 80m morning greyline without caffeine, people cannot live this way!!>> >> >> >> >> ----->> 73,>> >> Joe, W8JH>> >> K3s, KPA 500, KAT 500 and KX3 happy user.>> -->> Sent from: http://elecraft.365791.n2.nabble.com/>> ______________________________________________________________>> Elecraft mailing list>> Home: http://mailman.qth.net/mailman/listinfo/elecraft>> Help: http://mailman.qth.net/mmfaq.htm>> Post: mailto:[hidden email]>> >> This list hosted by: http://www.qsl.net>> Please help support this email list: http://www.qsl.net/donate.html>> Message delivered to [hidden email] > ______________________________________________________________> Elecraft mailing list> Home: http://mailman.qth.net/mailman/listinfo/elecraft> Help: http://mailman.qth.net/mmfaq.htm> Post: mailto:[hidden email]> > This list hosted by: http://www.qsl.net> Please help support this email list: http://www.qsl.net/donate.html> Message delivered to [hidden email] > ______________________________________________________________Elecraft mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:[hidden email] list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.htmlMessage delivered to [hidden email]
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ke9uw

Re: RFI issues

In reply to this post by Jim Brown-10

I don't know the mx. I get it though, it's worked on switching supplies and I wind multiple turns. They did a great job on a treadmill. A different mix may be better because it seems like a lower frequency.

Jack BMW Motorcycles
Chuck KE9UW
[hidden email]

Sent from my iPad

> On Feb 21, 2020, at 5:35 PM, Jim Brown <[hidden email]> wrote:
>
> On 2/21/2020 3:08 PM, hawley, charles j jr wrote:
>> I have put ferrite on the line cord which don't affect it.
>
> Which ferrite? There are dozens of different types. Did you just clamp one on, or did you wind multiple turns through it as shown in these links?
> http://k9yc.com/KillingReceiveNoise.pdf and
> http://k9yc.com/KillingRXNoiseVisalia.pdf
>
> If you don't use the "right" ferrite and if you don't wind the "right" number of turns for the band(s) where you hear the noise, the ferrite WON'T do anything.
>
> 73, Jim K9YC
>
>
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Chuck, KE9UW

ke9uw

Re: RFI issues

In reply to this post by ke9uw

Keurig Pro Duo 5200 (they leak stuff out when you turn them upside down...)

Jack BMW Motorcycles
Chuck KE9UW
[hidden email]

Sent from my iPad

> On Feb 21, 2020, at 7:20 PM, Gary K9GS <[hidden email]> wrote:
>
> What's the MODEL number??73,Gary K9GS
> -------- Original message --------From: "hawley, charles j jr" <[hidden email]> Date: 2/21/20 5:08 PM (GMT-06:00) To: [hidden email] Cc: [hidden email], W8JH <[hidden email]> Subject: Re: [Elecraft] RFI issues This is the newest one that brews a carafe of 10 cups or does a pod into your mug. I too have had others without any noise, but this new one puts a huge sine wave of noise on the panadapter. I have put ferrite on the line cord which don't affect it. I just turn the thing off after brewing...or wait about 5 minutes and the noise goes away. Jack BMW MotorcyclesChuck [hidden email] from my iPad> On Feb 21, 2020, at 11:42 AM, Lyn Norstad <[hidden email]> wrote:> > I've had several of the inexpensive Keurig Pod type, and have never had an issue on any band.> > Kitchen is right next door to the shack, and the pot is on all day.> > Lyn> W0LEN> > > -----Original Message-----> From: [hidden email] [mailto:[hidden email]] On Behalf Of hawley, charles j jr> Sent: Thursday, February 20, 2020 2:04 PM> To: W8JH> Cc: [hidden email]> Subject: Re: [Elecraft] RFI issues> > I still love the coffee maker and would buy it again. I just turn it off after the pot or pod is brewed.> > Chuck Jack Hawley > KE9UW> > Sent from my iPhone, cjack > >> On Feb 20, 2020, at 12:12 PM, W8JH <[hidden email]> wrote:>> >> ke9uw wrote>>> We bought a new Keurig coffee maker which does a pot or also the pods. It>>> puts a huge noise out to the ham frequencies. Have to turn it off to get>>> on 80M>> >> That is a serious conflict!>> >> 80m morning greyline without caffeine, people cannot live this way!!>> >> >> >> >> ----->> 73,>> >> Joe, W8JH>> >> K3s, KPA 500, KAT 500 and KX3 happy user.>> -->> Sent from: http://elecraft.365791.n2.nabble.com/>> ______________________________________________________________>> Elecraft mailing list>> Home: http://mailman.qth.net/mailman/listinfo/elecraft>> Help: http://mailman.qth.net/mmfaq.htm>> Post: mailto:[hidden email]>> >> This list hosted by: http://www.qsl.net>> Please help support this email list: http://www.qsl.net/donate.html>> Message delivered to [hidden email] > ______________________________________________________________> Elecraft mailing list> Home: http://mailman.qth.net/mailman/listinfo/elecraft> Help: http://mailman.qth.net/mmfaq.htm> Post: mailto:[hidden email]> > This list hosted by: http://www.qsl.net> Please help support this email list: http://www.qsl.net/donate.html> Message delivered to [hidden email] > ______________________________________________________________Elecraft mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:[hidden email] list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.htmlMessage delivered to [hidden email]
> ______________________________________________________________
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> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Chuck, KE9UW

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