[Premium-Rx] WJ 8711A trouble shooting question

[John]

Hi

Although I am not intimately familiar with the 8711, I have noticed that the 
WJ receivers in general seem to be set up so that everything can look OK, 
but the rx has a fault of some sort.   That is, the front panel will display 
everything ok, the control system echoes/acknowleges commends back to the 
front panel (or remote `controller), yet some of the digital data in the RF 
or synthesizer boards is not toggling properly.  If you hear static, may I 
suggest you sweep the full bandwidth of  the receiver, listening for any 
response...if indeed you are receiving some fixed frequency, that info is 
valuable in trouble shooting.

good luck

John Collins
_______________________________________
----- Original Message ----- 
From: "Jon" <jonklinkhamer at comcast.net>
To: "Premium-Rx" <premium-rx at ml.skirrow.org>
Sent: Tuesday, December 27, 2005 2:42 PM
Subject: [Premium-Rx] WJ 8711A trouble shooting question


> Hello to group,
>
> I kind of had a 8711A fall into my lap however upon further investigation 
> I
> can't receive anything just static. All the front panel functions seems to
> work and the BIT test passes.  My first question is before I go thru the
> signal chain with a generator I wanted to make sure the firmware is not
> causing a problem -  that is its all compatible. The front panel EPROM has
> version 1.21 and the control firmware is 3.00.01 and I couldn't see the 
> DSP
> Prom.  I don't know any history of the radio and judging from the software
> versions outlined in the manual this firmware is a little old.  For the
> group who own this radio, should I be inquiring about an upgrade? Any 
> quick
> and dirty test before I bring out the generator? Any comments would be
> greatly appreciated.
>
> Thanks,
> Jon, KB1DC
>
>
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