[Elecraft] K3 Attenuation on Receive of 20 meter band only problem.

[Phil Hystad]

Fred,

I only felt bad for a few moments but after a flood of responses all saying the same thing (check RX ant enable) I realized that this was likely a more common problem instead of thinking that I was a clown not knowing immediately what it was.

But, the worse part is how stumped I was at first.  I was staring at the K3 display looking for some clues.  I checked the Antenna to make sure I was on Ant1 (I don't have anything on Ant2 but that would have affected TX anyway) but while looking at Ant1 display on the K3 I saw the RX displayed right next to it. I remember saying to myself "What is that doing there?".  For some reason, of all the past times I stared at that K3 display screen looking for the problem I was oblivious to the fact that RX antenna was enabled.  I then disabled it and went to the computer to post a message to the board that I found the problem only to see Rick's message pop up right in front of me at that very moment.

73, phil, K7PEH


On Mar 3, 2013, at 8:58 AM, Fred Smith <mfsj at mo-net.com> wrote:

> Phil
> 
> Don't feel bad I did the exact same thing this morning, had my receiving
> antenna on when on 160m then went to 20m same thing.
> 
> It took me 15 min to find what I had done all the time right in front of me.
> 
> 73,
> Fred/N0AZZ
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Phil Hystad
> Sent: Sunday, March 03, 2013 10:33 AM
> To: Rick Prather
> Cc: Elecraft at mailman.qth.net List
> Subject: Re: [Elecraft] K3 Attenuation on Receive of 20 meter band only
> problem.
> 
> Rick,
> 
> I just now discovered the RX antenna on.  I mean, Just seconds before your
> message came in.  But, thanks for the quick response and the correct answer.
> 
> There are so many features on the K3, sometimes finding the problem is more
> time-consuming.
> 
> thanks,
> 73, phil, K7PEH
> 
> 
> On Mar 3, 2013, at 8:31 AM, Rick Prather <k6limaecho at gmail.com> wrote:
> 
>> Phil,
>> 
>> Do you have your RX ANT button engaged on 20M?
>> 
>> Rick
>> K6LE
>> 
>> On 3/3/2013, at 8:29 , Phil Hystad <phystad at mac.com> wrote:
>> 
>>> I just realized that there is some heavy attenuation of received signals
> on my K3 for the 20 meter band.  I thought the band was dead this morning
> which seems unusual since this is a big SSB DX contest.  My other bands are
> busy as you would expect and I have made a number of DX contacts on 15 and
> 10 meters this weekend.
>>> 
>>> But, I turned on my Icom Pro III and with the very same antenna as used
> by the K3 (a Traffie Hexbeam) the 20 meter band came alive and was full of
> signals.  These DO NOT appear at all on my K3.
>>> 
>>> This is the 20 meter band only.  It does not appear to affect transmit as
> far as I can tell.  I can transmit into my antenna through the KAT500 and I
> have the low SWR (about 1.2:1) and my LP100A reads the right amount of power
> output (key down).
>>> 
>>> Is this some setting I screwed up accidentally in the past or is there
> something that could go wrong to result in single band RECEIVE attenuation
> in the K3.
>>> 
>>> Thanks,
>>> 
>>> 73, phil, K7PEH
>> 
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