[Elecraft] 160 module fustration

[W3FPR - Don Wilhelm]

George,

There is not an obvious connection between the Rant and the PreAmp - unless
you have something shorted to an adjacent circuit.  Check the soldering on
the header below the RF Board and on the 160 meter board.  The only thing on
the 160 meter board are the relays and the low pass filter for the 160 meter
band - not much to go wrong.  You may also want to check the RF board
carefully in the area where you added the additional capacitors for 160
meters.

The relays are the latching type, so you can set the K2 to the 160 meter
band and use an ohmmeter to see if the proper paths are established through
the relay contacts - use the schematic as a guide to see where you should
meter the path.

73,
Don W3FPR

> -----Original Message-----
>
> Im starting to wonder if the 160 module is bad.
> The antenna switch only works if it is in preamp mode
> If  the preamp is switched on with the r ant on the r ant will not
> switch off or on.
>
> Also large attenuation of signals when it is on the standard
> antenna. When switched to the r ant  with an antenna on the r ant
> signals are strong. When switched to the standard antenna with an
> antenna still attached to the r ant, signals are still strong.
>
> I hear relays clicking  ( I was not hearing that before)  but I fear
> that the relays contacts are shorted. It has already been replaced once
> and the board cant take much more abuse. This was a brand new module.
> also replaced the relay driver chip and the mcu. There is nothing else!
>
> I think im going to get another 160 module and start over.
> Its cheap enough.
>
> George NE2I
>
>
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