Elecraft

Tweak for phone?

Classic

List

Threaded

13 messages Options

Dave LaBat

Tweak for phone?

Interesting weekend. First time I've had strong enough signals at the K3 that I felt like I was pushing it at all.

I have my K3 configured with only a 250 Hz for extra filters, ridiculously narrow for everyday CW, great in a contest! I have no other SSB filters.

With CW I have noticed that seemingly no matter how strong the nearby signals I can dig out the weak one in between. Didn't seem that way, as much. on phone. I struggled to pull the weak one with nearby strong stations. Used the Attenuator a lot this weekend.

I noticed when I tried to narrow the passband from the 2.7 nominal that the signals often decreased in intelligibility. I used 1.8 K filters on my Yaesu FT 1K. I also notice I was not tuning dead on to SSB signals, I seemed to be off to the side emphasizing hi end response. I could hear as I swung past the station where the more dead on was. I haven't noticed that with other rigs.

So I am asking: Would the 1.8 help, and still maintain good intelligibility? What other tweaks or changes have the list members used for top phone performance.

As an aside, I flipped a FT-990 in at the end of the contest.... wow, I guess part of it is I am spoiled!

73, Dave NT6AA
______________________________________________________________
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

wayne burdick

Re: Tweak for phone?

Administrator

On Mar 8, 2009, at 10:11 PM, Dave LaBat wrote:

> I noticed when I tried to narrow the passband from the 2.7 nominal
> that the signals often decreased in intelligibility. I used 1.8 K
> filters on my Yaesu FT 1K. I also notice I was not tuning dead on to
> SSB signals, I seemed to be off to the side emphasizing hi end
> response. I could hear as I swung past the station where the more dead
> on was. I haven't noticed that with other rigs.

Hi Dave,

When you reduce WIDTH in SSB mode, the center frequency is maintained
(at 1500 Hz), because the K3 doesn't know if you're reducing WIDTH in
order to cut the highs or the lows -- it just does both.

Instead, you can:

- tap one of the knobs to switch to LO CUT/HI CUT instead, and do a HI
CUT

Or

- after reducing WIDTH, use SHIFT to move the passband where you'd like
it for best clarity.

You can save two settings you like (in each mode) using the NORM1/2
feature, or presets I/II. These are covered in the owner's manual.

73,
Wayne
N6KR

---

http://www.elecraft.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

Dave Hachadorian

Re: Tweak for phone?

In reply to this post by Dave LaBat

There's a sweet spot for ssb contesting with DSP width = 1.8
and shift FC = 1.1 You can even go down to width = 1.5 if
the going gets really rough. I have the 1.8 filter, but I
can't hear any major difference when it switches in. The DSP
filter has narrower skirts than the crystal filter. The 1.8
crystal filter is good for peace of mind in a contest, but I
really don't think it's necessary with judicious reduction
of RF gain, and turning off preamp and attenuator when
conditions allow.

QRM WAS rough this weekend with everyone being on 20 meters.
I thought the K3 did very well with it. I was able to read
weak ssb signals with much louder signals 1.5 KHz away,
which is pretty darn good.

Dave Hachadorian, K6LL
Yuma, AZ

----- Original Message -----
From: "Dave LaBat" <[hidden email]>
To: "K3_Discussion_Group" <[hidden email]>
Sent: Monday, March 09, 2009 5:11 AM
Subject: [Elecraft] Tweak for phone?

> Interesting weekend. First time I've had strong enough
> signals at the K3 that I felt like I was pushing it at
> all.
>
> I have my K3 configured with only a 250 Hz for extra
> filters, ridiculously narrow for everyday CW, great in a
> contest! I have no other SSB filters.
>
> With CW I have noticed that seemingly no matter how strong
> the nearby signals I can dig out the weak one in between.
> Didn't seem that way, as much. on phone. I struggled to
> pull the weak one with nearby strong stations. Used the
> Attenuator a lot this weekend.
>
> I noticed when I tried to narrow the passband from the 2.7
> nominal that the signals often decreased in
> intelligibility. I used 1.8 K filters on my Yaesu FT 1K. I
> also notice I was not tuning dead on to SSB signals, I
> seemed to be off to the side emphasizing hi end response.
> I could hear as I swung past the station where the more
> dead on was. I haven't noticed that with other rigs.
>
> So I am asking: Would the 1.8 help, and still maintain
> good intelligibility? What other tweaks or changes have
> the list members used for top phone performance.
>
> As an aside, I flipped a FT-990 in at the end of the
> contest.... wow, I guess part of it is I am spoiled!
>
> 73, Dave NT6AA
> ______________________________________________________________
> 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

Tom Wylie

Re: Tweak for phone?

I'd second that Dave. I ran with DSP width at 1.6 for most of the time
with the FC at 1.1

Maybe its because many of us hams are getting older and the "bassy" part
of our voice has more energy.
The centre frequency is lowering.........

Spent most of the time looking for North Dakota and am still looking.
Many EU stations were punching holes in the back of my beam at 50dB over
9 up to 6Khz wide. Stateside stations below about an S7 were
inaudible when the band was at its peak (20m that is)....

Tom
GM4FDM

Dave Hachadorian wrote:

> There's a sweet spot for ssb contesting with DSP width = 1.8
> and shift FC = 1.1 You can even go down to width = 1.5 if
> the going gets really rough. I have the 1.8 filter, but I
> can't hear any major difference when it switches in. The DSP
> filter has narrower skirts than the crystal filter. The 1.8
> crystal filter is good for peace of mind in a contest, but I
> really don't think it's necessary with judicious reduction
> of RF gain, and turning off preamp and attenuator when
> conditions allow.
>
> QRM WAS rough this weekend with everyone being on 20 meters.
> I thought the K3 did very well with it. I was able to read
> weak ssb signals with much louder signals 1.5 KHz away,
> which is pretty darn good.
>
> Dave Hachadorian, K6LL
> Yuma, AZ
>
>
> ----- Original Message -----
> From: "Dave LaBat" <[hidden email]>
> To: "K3_Discussion_Group" <[hidden email]>
> Sent: Monday, March 09, 2009 5:11 AM
> Subject: [Elecraft] Tweak for phone?
>
>
>
>> Interesting weekend. First time I've had strong enough
>> signals at the K3 that I felt like I was pushing it at
>> all.
>>
>> I have my K3 configured with only a 250 Hz for extra
>> filters, ridiculously narrow for everyday CW, great in a
>> contest! I have no other SSB filters.
>>
>> With CW I have noticed that seemingly no matter how strong
>> the nearby signals I can dig out the weak one in between.
>> Didn't seem that way, as much. on phone. I struggled to
>> pull the weak one with nearby strong stations. Used the
>> Attenuator a lot this weekend.
>>
>> I noticed when I tried to narrow the passband from the 2.7
>> nominal that the signals often decreased in
>> intelligibility. I used 1.8 K filters on my Yaesu FT 1K. I
>> also notice I was not tuning dead on to SSB signals, I
>> seemed to be off to the side emphasizing hi end response.
>> I could hear as I swung past the station where the more
>> dead on was. I haven't noticed that with other rigs.
>>
>> So I am asking: Would the 1.8 help, and still maintain
>> good intelligibility? What other tweaks or changes have
>> the list members used for top phone performance.
>>
>> As an aside, I flipped a FT-990 in at the end of the
>> contest.... wow, I guess part of it is I am spoiled!
>>
>> 73, Dave NT6AA
>> ______________________________________________________________
>> 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
>>
>
> ______________________________________________________________
> 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
>
>
> ---
> avast! Antivirus: Inbound message clean.
> Virus Database (VPS): 090308-0, 08/03/2009
> Tested on: 09/03/2009 09:33:28
> avast! - copyright (c) 1988-2009 ALWIL Software.
> http://www.avast.com
>
>
>
>
>

--
So I met the bloke who invented crosswords today. I can't remember his
name, it's P something T something R.

---
avast! Antivirus: Outbound message clean.
Virus Database (VPS): 090308-0, 08/03/2009
Tested on: 09/03/2009 09:43:23
avast! - copyright (c) 1988-2009 ALWIL Software.
http://www.avast.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

w0mu

Re: Tweak for phone?

In reply to this post by Dave Hachadorian

I have the 1.8 filter and I will have to look for that sweet spot. I found
I was loosing too much of intelligibility when I switched in the 1.8 filter.
This was most noticeable on weaker stations. I have the 2.8 and ran the dsp
down to about 2.3 which worked pretty well for me. The DSP filter between
my ears works very well for me.

I spent more time adjusting the rf gain.

I did notice that I was not mentally complaining about wide stations or lots
of splatter. The roofing filters work very well.

"A slip of the foot you may soon recover, but a slip of the tongue you may
never get over." Ben Franklin
-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Dave Hachadorian
Sent: Monday, March 09, 2009 12:07 AM
To: Elecraft reflector; Dave LaBat
Subject: Re: [Elecraft] Tweak for phone?

There's a sweet spot for ssb contesting with DSP width = 1.8 and shift FC =
1.1 You can even go down to width = 1.5 if the going gets really rough. I
have the 1.8 filter, but I can't hear any major difference when it switches
in. The DSP filter has narrower skirts than the crystal filter. The 1.8
crystal filter is good for peace of mind in a contest, but I really don't
think it's necessary with judicious reduction of RF gain, and turning off
preamp and attenuator when conditions allow.

QRM WAS rough this weekend with everyone being on 20 meters.
I thought the K3 did very well with it. I was able to read weak ssb signals
with much louder signals 1.5 KHz away, which is pretty darn good.

Dave Hachadorian, K6LL
Yuma, AZ

----- Original Message -----
From: "Dave LaBat" <[hidden email]>
To: "K3_Discussion_Group" <[hidden email]>
Sent: Monday, March 09, 2009 5:11 AM
Subject: [Elecraft] Tweak for phone?

______________________________________________________________
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

______________________________________________________________
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

Barry N1EU

Re: Tweak for phone?

W0MU Mike Fatchett wrote

I have the 1.8 filter and I will have to look for that sweet spot.

Like K6LL, I found my sweet spot with FC=1.1Khz. I went with width at 1.5 or 1.7Khz all weekend.

I came up with one neat trick that I honed in the contest and that worked very well to pull out weak ssb dx with a loud neighbor in the passband (which happened VERY often). I turn AGC off, AF Lim on 20-22, AF Gain @ 25% (Heil Pro Set into headphone jack) and backed off RF Gain till the offender wasn't driving audio into distortion. Although the resulting audio level was quite low for the weak station, I was consistently able to pick him out under the loud station. It's amazing how quiet and clean the K3 sounds when the gain is throttled in this manner.

73,
Barry N1EU

Ed Muns, W0YK

Re: Tweak for phone?

In reply to this post by Dave LaBat

> I noticed when I tried to narrow the passband from the 2.7
> nominal that the signals often decreased in intelligibility.
> I used 1.8 K filters on my Yaesu FT 1K. I also notice I was
> not tuning dead on to SSB signals, I seemed to be off to the
> side emphasizing hi end response. I could hear as I swung
> past the station where the more dead on was. I haven't
> noticed that with other rigs.
>
> So I am asking: Would the 1.8 help, and still maintain good
> intelligibility? What other tweaks or changes have the list
> members used for top phone performance.

I have been using a 1.5 kHz bandwidth on SSB with the K3 for over 18 months
now. In fact, I never use a wider bandwidth. I think the intelligibility
is excellent. The K3 has changed phone Sweepstakes from tortuous to
pleasant for me. Unlike CW where WIDTH and SHIFT are handy, I only use HI
CUT, and occasionally LO CUT, on SSB. To go from the default 2.8 kHz to 1.8
kHz on SSB, simply reduce HI CUT by 1000 Hz. As I go further, I find that
around 1.6 kHz bandwidth, I like to increase LO CUT 50-100 Hz for optimum
intelligibility. The 1.8 kHz (actual -6 dB BW is 1.9 kHz) crystal filter is
an excellent roofer for this application. I use the narrower 1.5 kHz
crystal filter (actual -6 dB BW is 1.65 kHz), available from INRAD.

Ed - W0YK

______________________________________________________________
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

Don Wilhelm-4

Re: Tweak for phone?

In reply to this post by Barry N1EU

I have a much easier time using HI CUT and LO CUT on SSB than attempting
to use WIDTH and SHIFT. Every time the width is changed, the center
frequency must be changed as well to maintain intelligibility. I use HI
CUT to reduce the QRM coming in at a high audio frequency and then use
LO CUT to reduce any low frequency trash. Careful on using LO CUT
because intelligibility can be quickly lost, but using these controls I
can reduce the bandwidth to less than 1.5 kHz and still maintain
intelligibility.
YMMV

73,
Don W3FPR

Barry N1EU wrote:

> W0MU Mike Fatchett wrote:
>
>> I have the 1.8 filter and I will have to look for that sweet spot.
>>
>>
>
> Like K6LL, I found my sweet spot with FC=1.1Khz. I went with width at 1.5
> or 1.7Khz all weekend.
>
> I came up with one neat trick that I honed in the contest and that worked
> very well to pull out weak ssb dx with a loud neighbor in the passband
> (which happened VERY often). I turn AGC off, AF Lim on 20-22, AF Gain @ 25%
> (Heil Pro Set into headphone jack) and backed off RF Gain till the offender
> wasn't driving audio into distortion. Although the resulting audio level
> was quite low for the weak station, I was consistently able to pick him out
> under the loud station. It's amazing how quiet and clean the K3 sounds when
> the gain is throttled in this manner.
>
> 73,
> Barry N1EU
>
>

W8ZN

Re: Tweak for phone?

Thanks to everyone for insignt on this, has anyone found a better AGC setup for phone? Being a long time VHFer I decided to be seious in a HF phone contest for the first time in 30 years. I've used my K3 for three cw contests and even though I'm a poor cw op, the K3 made coping so easy I figured a phone contest was next.

For some crazy reason, I thought I would try 20m single band. Ok, all you HFers can stop laughing and get off the floor now, what a zoo!! Is it a pre-requeset that everyone drink 5 cans of Jolt before starting? I had issues with stations either 2 khz below or 1.8 khz above really chewing me up. I tried playing with the bandwidth and shift but I need to play more with it and the lo and hi cuts. You really get spoiled with the way you can copy S0 stations on cw between two big cw signals.

The K3 really handled the strong signals beyond my imagination, no fur-burgers or other interference that I see in other rigs. Even though the old TS-850's are really good rigs, someone 10 khz away that is 20 over S9 would create "issues", not on the K3.

I'm waiting for the new firmware release with CONFG:NOQRM - Wayne, please add this to the top of the list!!

Terry

______________________________________________________________
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

David Gilbert

Re: Tweak for phone?

In reply to this post by Ed Muns, W0YK

I'm not fond of SSB contests so I only ordered the 2.8 KHz filters for
SSB when I bought my K3 (I do have the 250 Hz filters for CW). I had a
change of heart at the last minute, though, and ordered two of the 1.5
KHz 8-pole filters from Inrad last Wednesday. They arrived in the mail
Friday afternoon (2 days service with no request from me for special
rush!!!) and I installed them that evening after 20m died. I ran the
entire remainder of the contest with the DSP set to 1.4 KHz and the
shift set for a center frequency of 1.00 Khz. I also used the AGC
settings Don had posted with very good results. Depending upon the
voice characteristics of the person on the other end, though, it is
possible to crank the DSP bandwidth down to 1.0 KHz or lower (with an
appropriate shift) and still be able to get intelligible copy.

Even so, the crud during the contest was incredible from adjacent
stations, many of whom simply had horrible signals. It's pretty sad
when S9+20 signals are so distorted that they almost cannot be copied.
I swear some people must simply crank up the mic gain and compression
until the output power stops increasing. I'm totally not an audiophile
when it comes to contest intelligibility, but I'm always surprised at
how many of the big stateside contest stations have really crummy
signals. The South American contest stations seemed to be the worst by
far, although there were some extremely clean signals from many of the
single ops down there. And YN2NB (operated by N1SNB), who according to
radio-sport.net seems poised to win World Single-Op High Power, had a
terrific sounding signal. In any case, if the crud falls within the
passband of whatever filter you're using, there isn't much of anything
that's going to remove it. Painful as it can be, about the only thing I
find that sometimes works is to temporarily crank up the audio high
enough to let my brain sort out the weaker signal below the stronger
spill-over distortion.

I'm not sure 1.5 KHz filters give any better results than I would have
gotten from the 1.8 KHz filters, but I didn't find any problem with them
and I only planned to buy one set of narrow SSB filters anyway. If QRM
and crud are bad enough that narrow DSP and a wider filter doesn't work,
I'm going to go as narrow as I can.

73,
Dave AB7E

Ed Muns wrote:

>> I noticed when I tried to narrow the passband from the 2.7
>> nominal that the signals often decreased in intelligibility.
>> I used 1.8 K filters on my Yaesu FT 1K. I also notice I was
>> not tuning dead on to SSB signals, I seemed to be off to the
>> side emphasizing hi end response. I could hear as I swung
>> past the station where the more dead on was. I haven't
>> noticed that with other rigs.
>>
>> So I am asking: Would the 1.8 help, and still maintain good
>> intelligibility? What other tweaks or changes have the list
>> members used for top phone performance.
>>
>
> I have been using a 1.5 kHz bandwidth on SSB with the K3 for over 18 months
> now. In fact, I never use a wider bandwidth. I think the intelligibility
> is excellent. The K3 has changed phone Sweepstakes from tortuous to
> pleasant for me. Unlike CW where WIDTH and SHIFT are handy, I only use HI
> CUT, and occasionally LO CUT, on SSB. To go from the default 2.8 kHz to 1.8
> kHz on SSB, simply reduce HI CUT by 1000 Hz. As I go further, I find that
> around 1.6 kHz bandwidth, I like to increase LO CUT 50-100 Hz for optimum
> intelligibility. The 1.8 kHz (actual -6 dB BW is 1.9 kHz) crystal filter is
> an excellent roofer for this application. I use the narrower 1.5 kHz
> crystal filter (actual -6 dB BW is 1.65 kHz), available from INRAD.
>
> Ed - W0YK
>
> ______________________________________________________________
> 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
>
>

Jim Brown-10

Re: Tweak for phone?

On Mon, 09 Mar 2009 08:46:28 -0700, David Gilbert wrote:

>It's pretty sad
>when S9+20 signals are so distorted that they almost cannot be copied.
>I swear some people must simply crank up the mic gain and compression
>until the output power stops increasing.

I suspect that some of the worst offenders were running line level into
a mic input and clipping it before the level control. Or perhaps
overdriving the sound card when they record.

>I'm totally not an audiophile
>when it comes to contest intelligibility, but I'm always surprised at
>how many of the big stateside contest stations have really crummy
>signals. The South American contest stations seemed to be the worst by
>far, although there were some extremely clean signals from many of the
>single ops down there.

Yes. There were far too many South Americans and JAs with audio so
distorted I had to listen for nearly a minute to get their call, even
though their signals were loud and in the clear. I made several posts to
the cluster about badly distorted audio. Several big signals from KH6
were generating lots of splatter.

>And YN2NB (operated by N1SNB), who according to radio-sport.net seems
>poised to win World Single-Op High Power, had a terrific sounding
signal.

Yes, he did sound great! So did W3LPL and K3LR -- not "pretty," but
quite punchy and intelligible.

73,

Jim Brown K9YC

______________________________________________________________
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

Tom Wylie

Re: Tweak for phone?

Sometimes the "voice" is OK but when they put on their voice keyers they
are overmodulating and splatter like hell!

Tom
GM4FDM

Jim Brown wrote:

> On Mon, 09 Mar 2009 08:46:28 -0700, David Gilbert wrote:
>
>
>> It's pretty sad
>> when S9+20 signals are so distorted that they almost cannot be copied.
>> I swear some people must simply crank up the mic gain and compression
>> until the output power stops increasing.
>>
>
> I suspect that some of the worst offenders were running line level into
> a mic input and clipping it before the level control. Or perhaps
> overdriving the sound card when they record.
>
>
>> I'm totally not an audiophile
>> when it comes to contest intelligibility, but I'm always surprised at
>> how many of the big stateside contest stations have really crummy
>> signals. The South American contest stations seemed to be the worst by
>> far, although there were some extremely clean signals from many of the
>> single ops down there.
>>
>
> Yes. There were far too many South Americans and JAs with audio so
> distorted I had to listen for nearly a minute to get their call, even
> though their signals were loud and in the clear. I made several posts to
> the cluster about badly distorted audio. Several big signals from KH6
> were generating lots of splatter.
>
>
>> And YN2NB (operated by N1SNB), who according to radio-sport.net seems
>> poised to win World Single-Op High Power, had a terrific sounding
>>
> signal.
>
> Yes, he did sound great! So did W3LPL and K3LR -- not "pretty," but
> quite punchy and intelligible.
>
> 73,
>
> Jim Brown K9YC
>
>
> ______________________________________________________________
> 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
>
>
> ---
> avast! Antivirus: Inbound message clean.
> Virus Database (VPS): 090308-0, 08/03/2009
> Tested on: 09/03/2009 16:53:56
> avast! - copyright (c) 1988-2009 ALWIL Software.
> http://www.avast.com
>
>
>
>
>

--
So I met the bloke who invented crosswords today. I can't remember his
name, it's P something T something R.

---
avast! Antivirus: Outbound message clean.
Virus Database (VPS): 090308-0, 08/03/2009
Tested on: 09/03/2009 19:19:17
avast! - copyright (c) 1988-2009 ALWIL Software.
http://www.avast.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

N2TK

Re: Tweak for phone?

In reply to this post by Don Wilhelm-4

Don,
My rule of thumb is on CW use WIDTH and on SSB use HI CUT. That has worked
well in the pileups.
N2TK/NP2 (KP2M), Tony

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Don Wilhelm
Sent: Monday, March 09, 2009 9:48 AM
To: [hidden email]
Subject: Re: [Elecraft] Tweak for phone?

I have a much easier time using HI CUT and LO CUT on SSB than attempting
to use WIDTH and SHIFT. Every time the width is changed, the center
frequency must be changed as well to maintain intelligibility. I use HI
CUT to reduce the QRM coming in at a high audio frequency and then use
LO CUT to reduce any low frequency trash. Careful on using LO CUT
because intelligibility can be quickly lost, but using these controls I
can reduce the bandwidth to less than 1.5 kHz and still maintain
intelligibility.
YMMV

73,
Don W3FPR

Barry N1EU wrote:

25%
> (Heil Pro Set into headphone jack) and backed off RF Gain till the
offender
> wasn't driving audio into distortion. Although the resulting audio level
> was quite low for the weak station, I was consistently able to pick him
out
> under the loud station. It's amazing how quiet and clean the K3 sounds
when
> the gain is throttled in this manner.
>
> 73,
> Barry N1EU
>
>
______________________________________________________________
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

______________________________________________________________
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