[Elecraft] [K2] Lost 80m recieve.

[Alan Davenport]

I just performed the VCO voltage checks you asked for and here are the results. It looks like it was worse than I thought. 40,30,20 and 12 meteres are all within spec. The other bands are as follows:
 
3.5 MHz = no output
4.0 MHz = no output
18.0 = 7.94v
18.2 = 7.94v
21.0, 21.45, 28.0 and 28.8 are all also fixed at 7.94V.
 
I never noticed the other bands had gone dead as I operate mostly on 40m CW some operation on 20m and 30m.  "When are the higher bands ever going to open up?" hihi
 
    73 de Al, W2GZN

From: Alan Davenport <w2gzn at yahoo.com>
To: "don at w3fpr.com" <don at w3fpr.com>
Cc: "elecraft at mailman.qth.net" <elecraft at mailman.qth.net>
Sent: Tuesday, September 6, 2011 8:33 AM
Subject: Re: [Elecraft] [K2] Lost 80m recieve.

Good Morning Don,
 
     Well it certainly looks like it is a VCO issue. On all bands except 80m, it is working correctly however on 80m here are the results:
 
3.5 MHz = 11038.61 MHz
4.0 MHz = 11038.51 MHz
 
Subtracting 4913 KHz gives me  ~ 6125.6 KHz. 
 
No wonder 80m isn't working. What surprises me is that this issue is confined to just one band. What is your suggestion on what to check?
 
    Thank you again Don,
     73 de Al, W2GZN