[Elecraft] TX/RX Discrepancy

[Trevor Day]

Hi All, just a brief update before I go to bed !  I bit the bullet and 
have done a factory reset followed by a Cal PLL on 40m only.  I have not 
entered any other new values, but I would not expect them to alter the 
relative tx/rx frequencies anyway.  The result is a +400 Hz Tx offset on 
LSB and a
+1kHz Tx offset on USB!!  Nominal frequency 7050 kHz.

  I'll go through a complete setting up routine tomorrow and let you know 
the outcome.

Thanks for listening

Trev G3ZYY

In message <73Tt6sG4DcL+Ew8g@trevday.eurobell.co.uk>, Trevor Day 
<Trev@secornwall.com> writes
>
>
>Thanks to Ron,Vic, Fran and Don, for your help.  Sorry to you in 
>particular Ron for the lengthy response where I should have made it 
>clear that the problem was with SSB.  I will take a good look again at 
>the BFO settings as I can only think that the fault lies in that area. 
>Having said that,  whilst testing on 40m using my own K2 as a 
>reference, rx'd signals sound fine, my own tx signal sounds fine, its 
>just 800Hz higher than the frequency I'm receiving on.  I did try 
>changing the BFO frequency either side of its nominal setting and, as 
>you would expect, changed the tx audio characteristics but had no 
>effect upon the freq split.
>I'll keep you guys posted.
>
>73 Trev G3ZYY
>
>In message <DAV991qCcWNYgEj4v5i000200ba@hotmail.com>, Don Brown 
><DolfinDon@msn.com> writes
>>Hi
>>
>>If you cannot find a problem anywhere else I think I would do a hard reset
>>on the K3 by holding 4,5 and 6
>>while powering on. Write down all of your filter settings before doing this
>>so you can reset them. You will need to run CAL PLL also.  This is a lot of
>>work so check everything else first.
>>
>>Don Brown
>>KD5NDB
>>
>>----- Original Message -----
>>From: "Trevor Day" <Trev@secornwall.com>
>>To: <elecraft@mailman.qth.net>
>>Sent: Tuesday, January 21, 2003 12:48 PM
>>Subject: [Elecraft] TX/RX Discrepancy
>>
>>
>>> Hi Guys,
>>> I am currently setting up the filters on an early (ish) K2 #1330
>>> recently acquired by a friend.  Whilst doing this I have found that the
>>> Tx and Rx frequencies are around 800 Hz apart (Tx high) and I have so
>>> far been unable to find the reason.  C22 adjustment for freq accuracy
>>> has no effect. I have trawled previous postings but can't find any
>>> reference to it.   I expect I'll find the cause eventually, but as I am
>>> not keen on re-inventing the wheel, has anyone a cure for this?
>>> Thanks as always
>>> Trev G3ZYY
>>> --
>>> Trevor Day
>

-- 
Trevor Day