[R-390] Antenna Relay???

[DW Holtmnan]

Hello,

The first thing that I would try is to check voltages from the selenium 
rectifier. I have had two of them go out and had to solid state the 
bridge. Both times, they started chattering in the standby and Cal 
positions. They still operated in the AGC and MGC  (de-energized) 
positions, so it might not be the rectifier, but I would still check it 
out.

Best,
DW Holtman
WB7SSN


Craig C. Heaton wrote:
> Rich,
>
> First take it apart, inspect, then clean. My relay, I've had it apart, has
> gold plated contacts. A small amount of DeOxit should do the job if nothing
> is broken.
>
> Going from memory here, Y2K is out in the shack, power from the selenium
> rectifier is used to power the relay. When powered the antenna contacts are
> grounded.
>
> Only a small screw driver is needed to remove the covers, have fun.
>
> Craig,
>
> -----Original Message-----
> From: r-390-bounces at mailman.qth.net
> [mailto:r-390-bounces at mailman.qth.net]On Behalf Of rbaldwin14
> Sent: Friday, December 01, 2006 2:32 PM
> To: R-390 at mailman.qth.net
> Subject: [R-390] Antenna Relay???
>
>
> I have a dead R-390A, but when I connect the antenna directly to the antenna
> lead removed from the antenna relay, the radio comes alive and works very
> well.
>
> So, my problem must be with the antenna relay.  I am sure someone else has
> experienced such a problem and can give me a little push in the right
> direction.
>
> Do I take it apart and clean it up or is it getting power that it's not
> supposed to be getting from the break in circuit and shorting out the
> antenna input?
>
> Thanks
>
> Rich Baldwin
> KD6VK
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