Elecraft › [K3]

K3 3.30 FW 80M split-strange behavior

Classic

List

Threaded

5 messages Options

K4SO

K3 3.30 FW 80M split-strange behavior

Hello,

Can anyone reproduce this one, or is it just me?

80M, A VFO on 3.515, no sub receiver (I don't have one), B VFO on 3.518.5.
Key the transmitter (PTT via a footswitch or front panel XMIT) and the
receiver comes back with vy. low sensitivity. Key it again, receiver is
fine. This effect is totally repeatable, toggling back and forth. No split,
no problem, so it's not the RF path and/or antenna. If I use the XIT to
accomplish the split, I have the same problem.

Here's the real kicker. When the split is less than 3 kHz or greater than 5
kHz, the K3 doesn't behave this way.

If I use VOX, no problem. The same configuration on 40M doesn't produce this
problem.

This might be a "If it hurts when you move your arm like this, don't move
your arm like this" situation, but I generally use PTT via a footswitch and
this split is not unusual. I'll run VOX to get around it for now.

V. 3.30 FW, 2.26 DSP

73, Mark

K3 #2861

www.k4so.com

www.picasaweb.com/kfourso

kfourso.googlepages.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

Joe Planisky

Re: K3 3.30 FW 80M split-strange behavior

Confirmed, but with a few differences. In my case, I found:

1. I don't have to actually be in SPLIT mode.

2. It doesn't seem to depend on the VFO-B frequency.

3. VOX on/off doesn't seem to matter, manually entering transmit with
the XMIT button seems to be the trigger.

4. It's frequency dependent.

That is, if I tune VFO-A to 3.535 and tap the XMIT button to enter
transmit and then tap it again to enter receive, the receiver is
dead. (By "dead", I mean I hear noise but at a very reduced level.)
If I tap my paddle, the receiver comes back immediately. If I do the
same thing at 3.530 or 3.540, it doesn't happen (i.e. the receiver
always comes back fine.)

Interestingly, I DON'T see this behavior at 3.515.

73
--
Joe KB8AP

On Oct 19, 2009, at 5:03 AM, Mark C. Killmon wrote:

> Hello,
>
>
>
> Can anyone reproduce this one, or is it just me?
>
>
>
> 80M, A VFO on 3.515, no sub receiver (I don't have one), B VFO on
> 3.518.5.
> Key the transmitter (PTT via a footswitch or front panel XMIT) and the
> receiver comes back with vy. low sensitivity. Key it again, receiver
> is
> fine. This effect is totally repeatable, toggling back and forth. No
> split,
> no problem, so it's not the RF path and/or antenna. If I use the
> XIT to
> accomplish the split, I have the same problem.
>
>
>
> Here's the real kicker. When the split is less than 3 kHz or greater
> than 5
> kHz, the K3 doesn't behave this way.
>
>
>
> If I use VOX, no problem. The same configuration on 40M doesn't
> produce this
> problem.
>
>
>
> This might be a "If it hurts when you move your arm like this, don't
> move
> your arm like this" situation, but I generally use PTT via a
> footswitch and
> this split is not unusual. I'll run VOX to get around it for now.
>
>
>
> V. 3.30 FW, 2.26 DSP
>
>
>
> 73, Mark
>
> K3 #2861
>
> www.k4so.com
>
> www.picasaweb.com/kfourso
>
> kfourso.googlepages.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

______________________________________________________________
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

Ted Roycraft

Re: K3 3.30 FW 80M split-strange behavior

Joe,

If this helps isolate the problem ... I tried your scenario (and others)
and I can't reproduce the problem.

My configuration:
-Sub receiver (but turned off)
-Firmware: uC: 3.44
d1: 2.38
d2: 2.38
fl: 1.04

73, Ted, W2ZK

Joe Planisky wrote:

> Confirmed, but with a few differences. In my case, I found:
>
> 1. I don't have to actually be in SPLIT mode.
>
> 2. It doesn't seem to depend on the VFO-B frequency.
>
> 3. VOX on/off doesn't seem to matter, manually entering transmit with
> the XMIT button seems to be the trigger.
>
> 4. It's frequency dependent.
>
> That is, if I tune VFO-A to 3.535 and tap the XMIT button to enter
> transmit and then tap it again to enter receive, the receiver is
> dead. (By "dead", I mean I hear noise but at a very reduced level.)
> If I tap my paddle, the receiver comes back immediately. If I do the
> same thing at 3.530 or 3.540, it doesn't happen (i.e. the receiver
> always comes back fine.)
>
> Interestingly, I DON'T see this behavior at 3.515.
>
> 73
> --
> Joe KB8AP
>
> On Oct 19, 2009, at 5:03 AM, Mark C. Killmon wrote:
>
>
>> Hello,
>>
>>
>>
>> Can anyone reproduce this one, or is it just me?
>>
>>
>>
>> 80M, A VFO on 3.515, no sub receiver (I don't have one), B VFO on
>> 3.518.5.
>> Key the transmitter (PTT via a footswitch or front panel XMIT) and the
>> receiver comes back with vy. low sensitivity. Key it again, receiver
>> is
>> fine. This effect is totally repeatable, toggling back and forth. No
>> split,
>> no problem, so it's not the RF path and/or antenna. If I use the
>> XIT to
>> accomplish the split, I have the same problem.
>>
>>
>>
>> Here's the real kicker. When the split is less than 3 kHz or greater
>> than 5
>> kHz, the K3 doesn't behave this way.
>>
>>
>>
>> If I use VOX, no problem. The same configuration on 40M doesn't
>> produce this
>> problem.
>>
>>
>>
>> This might be a "If it hurts when you move your arm like this, don't
>> move
>> your arm like this" situation, but I generally use PTT via a
>> footswitch and
>> this split is not unusual. I'll run VOX to get around it for now.
>>
>>
>>
>> V. 3.30 FW, 2.26 DSP
>>
>>
>>
>> 73, Mark
>>
>> K3 #2861
>>
>> www.k4so.com
>>
>> www.picasaweb.com/kfourso
>>
>> kfourso.googlepages.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
>>
>
> ______________________________________________________________
> 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
>
>

Joe Planisky

Re: K3 3.30 FW 80M split-strange behavior

In reply to this post by Joe Planisky

I should also mention that I'm on FW 3.44.

73
--
Joe KB8AP

On Oct 19, 2009, at 6:04 AM, Joe Planisky wrote:

> That is, if I tune VFO-A to 3.535 and tap the XMIT button to enter
> transmit and then tap it again to enter receive, the receiver is
> dead. (By "dead", I mean I hear noise but at a very reduced level.)
> If I tap my paddle, the receiver comes back immediately. If I do the
> same thing at 3.530 or 3.540, it doesn't happen (i.e. the receiver
> always comes back fine.)
> On Oct 19, 2009, at 5:03 AM, Mark C. Killmon wrote:
>
>> Hello,
>>
>>
>>
>> Can anyone reproduce this one, or is it just me?

E72X

Remove birdies with different shift!

In reply to this post by Ted Roycraft

Hi,

Process removing birdies is explained in manual with default shift value 1.50 .. and I remove only birdies what I can hear with antenna connected
If you need use different Shift for me is very good -1.15 which gives little more bass and punchy audio on this way I realized new birdies on some freq. Is there same way for remove this new birdies? Is that mean that for all new shift need to use Signal remove process ?

73,

E72X - Gordan

______________________________________________________________
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