Re: [Elecraft] K2

[Bruce Florip]

You might try a ferrite core on the D.C. input lead and/or a battery supply
with short leads.

73. AA7AR/6

On Tue, Jan 17, 2023 at 11:10 AM Andrew Moore  wrote:

>   Have you tried it into a dummy load?
>
> 73 NV1B
>
>
> On Tue, Jan 17, 2023 at 11:35 AM Mark Finkelstein via Elecraft <
> elecraft@mailman.qth.net> wrote:
>
> > My K2 keyer works on test and 0.1 watts on a new installation, but after
> > that it cuts out. I suspect RF interference. Any other thoughts before I
> > retire the station set up?
> > Thanks,
> > Mark
> >
> > Sent from my iPad
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Re: [Elecraft] Diversity

[Gary Johnson via Elecraft]

More rigs with diversity reception:
 
FTdx101
Ts-990s
Icom 7610
…Just about every dual-rx radio does it.

Gary NA6O
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[Elecraft] Diversity

[Bob Perkins]

 I have both a Flex 6600 and Apache Labs Anan 7000. Both of them do
diversity, though the Apache Labs handles it by far the best. I don't have
a K4 to compare to them with.

Bob NN5D
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Re: [Elecraft] Diversity

[Ed Cole]

One VERY IMPORTANT reason I chose the K3 with sub Rx was the fact the 
two receivers were in coherent phase, whereas Flex radio had two Rx but 
not in total phase.


I think diversity is tossed around as a loosely defined process.

In 2012 when I wanted a dual-Rx radio to process dual-polarity signal 
for use by MAP65, K3 was the only "game" available "off-shelf".  Since 
access is not provided to the IQ data stream in the K3, I had to resort 
to running two phase-locked LP-Pan (SDR) on the 1st IF's.  I had to 
modify the LP-Pan to have both in phase-lock on 8.215 MHz.


A few years later the IQ+ was introduced for use on 144 and 432 dual-Rx. 
 I is a SDR.  But one still would need a separate transmitter to operate.


Here is a block diagram of how I used my K3 (in diversity mode) in a 
dual-polarity adaptive receiver running MAP65:

http://www.kl7uw.com/MAP65.htm

Recently, I explored the SDR-DUO for use for noise cancelling and noted 
with adding ext ref, the two Rx were in phase-lock.  Later, I noted it 
tuned up to 3-GHz so would be usable on ham freq up 13cm (2.3 GHz).  I'm 
considering getting one primarily as a RA receiver on 21cm (1420-MHz).


I suspect there are more choices out there for diversity Rx, now days.

73, Ed - KL7UW
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Re: [Elecraft] K2

[Andrew Moore]

  Have you tried it into a dummy load?

73 NV1B


On Tue, Jan 17, 2023 at 11:35 AM Mark Finkelstein via Elecraft <
elecraft@mailman.qth.net> wrote:

> My K2 keyer works on test and 0.1 watts on a new installation, but after
> that it cuts out. I suspect RF interference. Any other thoughts before I
> retire the station set up?
> Thanks,
> Mark
>
> Sent from my iPad
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to andrew.n...@gmail.com
>
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Re: [Elecraft] K2

[Michael Carter]

Hi Mark,

It sounds like self-induced RFI, but occurrence at a very low
nominal TX power is suspicious.  Can you say more about:
-- antenna(s) in use
-- any external or internal ATU in use
-- connections to your K2 other than antenna, DC power, and key/paddle?

73,
Mike, K8CN
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Re: [Elecraft] K4 and K4D Backlog wait significantly reduced

[Ted Roycraft]

Eric,
What's the status of a K4 to K4D conversion kit?

Thanks and 73,
Ted Roycraft, W2ZK

On 1/12/2023 22:25, Eric Swartz wrote:

We've been working hard to get the K4 & K4D backlog down and I'm now
pleased to announce that it has been reduced significantly. Whew!

We are now contacting customers that ordered in late Dec and early January
that their orders will be ready to ship in the next 10-20 business days.

Please contactsa...@elecraft.com  or give us a call (831-763-4211)if you
ordered your K4 any time before the end of 2022 and have not heard from us.
We'll get your order back into the now very short queue.  It's always
possible we have an old email address for you or that our emails were
missed or sent to your spam folder when originally sent.

Thanks again for your incredible patience as we've worked through the K4
and K4D backlog.   We're working now on getting the K4HD radio and K4/K4D
to K4HD upgrade options  parts sourced and then into production and out
later this year.

73, Eric  WA6HHQ
*elecraft.com*
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[Elecraft] K2

[Mark Finkelstein via Elecraft]

My K2 keyer works on test and 0.1 watts on a new installation, but after that 
it cuts out. I suspect RF interference. Any other thoughts before I retire the 
station set up?
Thanks,
Mark

Sent from my iPad
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