[Elecraft] Chirp with K2/XV222

I got a report of chirp when running CW on 222 MHz during the VHF contest this past weekend.  This has been confirmed by a few others since the contest.  It's quite possible that the various voltage drops from the Rover vehicle battery to the XV222 were not leaving enough headroom for the 78L09

Re: [Elecraft] Chirp with K2/XV222

Steve, I would think your assumptions for the cause may be correct. BUT -- rather than changing the XV222, I would suggest running a larger gauge wire to the XV222 would be the easiest solution. Assuring that all connections on the power cord are tight and with very low resistance should help

Re: [Elecraft] Chirp with K2/XV222

Cc: "elecraft@mailman.qth.net" Sent: Tuesday, June 11, 2013 7:14:40 PM Subject: Re: [Elecraft] Chirp with K2/XV222 Steve, I would think your assumptions for the cause may be correct. BUT -- rather than changing the XV222, I would suggest running a larger gauge wire to the XV222 wo

[Elecraft] Chirp with K2/XV222 - Fuseholder Issues

It looks like one of the causes of my chirp on 222 MHz with the K2/XV222 combo was an unreliable fuseholder (an in-line type for an AGC/3AG/1-1/4x1/4 inch fuse).  I wonder if automotive blade type fuses/holders might be more reliable as far as contact resistance goes.  Does anyone have any goo

Re: [Elecraft] Chirp with K2/XV222 - Fuseholder Issues

When I built my KPA100 back in 2003 my kit was short part of the fuse holder so I went down to the automotive store and bought one. A few months later my K2/100 started shutting off unexpectedly while transmitting. I discovered that the fuse holder was warm enough that the plastic was softening sli

Re: [Elecraft] Chirp with K2/XV222 - Transverter Issues

Thanks for your comments, Ron.  My fuseholder isn't gradually meltingit's a pretty robust one and teh spring effect is fine, but small contact area and dissimilar metals appears to be the issue.  It seems like the automotive blade fuses are the wave of the future in ham radio !   73, Steve V