Re: [Elecraft] [K3] Sub receiver intermittant failures

Ray If you have KSYN3A synthesizers installed, check for the following mod. Ref: KSYN3A Synthesized Installation Instructionspp 5 https://ftp.elecraft.com/K3S/Manuals%20Downloads/E740257%20KSYN3A%20Installation%20Rev%20A6.pdf KREF3 Output Level Modification https://ftp.elecraft.com/K3/Mod%

Re: [Elecraft] [K3] Sub receiver intermittant failures

Check the obvious. Are you sure you didn't accidentally turn down the RF and/or AF gain on the SubRx? I know how easy it is to do. I have seen me do it. Buck, k4ia Honor Roll 8BDXCC EasyWayHamBooks.com On 6/10/2020 2:26 PM, hawley, charles j jr wrote: Maybe you could remove the sub and sen

Re: [Elecraft] [K3] Sub receiver intermittant failures

Maybe swap synthesizers Jack BMW Motorcycles Chuck KE9UW c-haw...@illinois.edu Sent from my iPad > On Jun 10, 2020, at 2:00 PM, Jack Brindle via Elecraft > wrote: > > That probably wouldn’t help. In this case the system includes the SubRx, the > Synthesizer and all the interconnects and ca

Re: [Elecraft] [K3] Sub receiver intermittant failures

Do NOT send in just the sub! (also an intermittent will invariably NOT fail when here at Elecraft). Like Jack said, check the sub KSYN3 by tapping DISP and look for PL2 voltages or SYN2 OK (tech mode must be on). When wiggling all the cables, don't forget the one at the back of the sub. Look for

Re: [Elecraft] [K3] Sub receiver intermittant failures

That probably wouldn’t help. In this case the system includes the SubRx, the Synthesizer and all the interconnects and cables that connect these to the rest of the radio. I would check the interconnects, especially the tmp coax cables that go from the SubRx to the rear panel connector and to t

Re: [Elecraft] [K3] Sub receiver intermittant failures

Maybe you could remove the sub and send it for evaluation somewhat economically Chuck Jack Hawley KE9UW Sent from my iPhone, cjack > On Jun 10, 2020, at 12:59 PM, Ray Albers wrote: > > I bought my K3 used. It's now a bit over six years old (S/N 8240). The > seller kindly included the manua

[Elecraft] [K3] Sub receiver intermittant failures

I bought my K3 used. It's now a bit over six years old (S/N 8240). The seller kindly included the manual, original invoice, a repair invoice and even the Fred Cady book. The K3 was factory assembled, with a factory-installed KRX3 subreceiver and the BNC auxiliary antenna connection. If I had bough