[hpsdr] Problems with Antenna switching in ALEX.

[Stijn Nestra]

Hi Kjell,

This problem sounds very familiar to me, I also have problems with Alex 
switching in a strange way. In fact I think it has already cost me some 
output opamps on Pennywistle. This because I have been testing with 
Pennywistle and no load got connected because Alex didn't switch to the 
right antenna connector.
I still haven't investigated the cause since I'm way too busy with other 
non ham related things lately.

Just to let you know you're not alone in this.

73 de Stijn PE1RKS

Op 08-09-12 11:27, Kjell Karlsen schreef:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi all.
>
> Recently I started to use my HPSDR setup with Mercury. Penny, OZY, Munin
> and Alex filters with 3 different antennas connected. When I change
> bands, the behaviour of the antenna switching is sometimes strange. If I
> change from 80 meter connected to antenna No.3 to 20 meter on antenna
> No.1, the connection is still to antenna No.3. If I then select 15 meter
> and back to 20, antenna No.1 is correctly selected. And there can be
> still another fault: Only RX has the correct antenna selected, TX is
> still to antenna No.3. I have to go into Setup and click TX antenna to
> No.3 and back to No.1.
>
> I have also tried to go into setup before doing any band switching,
> pressing Apply but the fault is still there.
>
> Yesterday I also observed another problem: If I select Fwd Pwr it jumps
> to Ref Pwr when I push PTT manually but if I select TUN, it stays in the
> selected field. Unfortunately I forgot to test MOX.
>
> This Transceiver is placed in my summer house and I intend to use it by
> remote control when I have found out how to install John Meltons software.
>
> I am using PSDR v.2.2.3 (3/27/12).
>
> Have anyone seen something like this?
>
> 73, Kjell
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