[Premium-Rx] Racal RA6840 manual.

[Tom B]

HI Greg,

I tried to email your direct and it bounces.

Running into an SDR is probably your best way of getting something out 
of it.  Does yours have the IF filter?  You can run without it if you 
jumper the filter connections.  Putting in a demodulator and then 
getting the correct eprom data would be a bit of work.

Does it do anything now?  When the battery goes dead, it reverts to 
external reference so it won't receive anything until you manually 
switch to internal.


Tom

On 8/21/2020 8:12 PM, vk3xyz wrote:
> Hi Tom et al,
>
> Ah well - sounds like I may have purchased a dud, but I suppose I can run it
> into an sdr at the IF.  According to Terry's glossy there is baseband out
> option, so perhaps demod was an option?
>
> If you have a service manual for the 6840 or perhaps the 6830 is close
> enough?, I would appreciate a copy. Or if you can point me in the right
> direction..
>
> There are two modules missing - one of them is the power supply, the other
> is the A8 module. I was hoping to recreate the A8 module.
>
>   
>
> DF - well othr is a df of sorts.
>
>   
>
> Cheers
>
> Greg
>
>   
>
>> Hi Greg,
>> I have had a few of these.  What did you want to know about it? I think
>> they were used in a DF system.  There is no demodulator built in.  There
>> should be 1 IF filter.
>> Tom Bryan
>> N3AJA
>> On 8/19/2020 4:07 AM, vk3xyz wrote:
>>> Hi Dan,
>>> Yes, it is the one that was on ebay aus. Thought it would be a good
> project
>
>>> - not that I don't have enough of those J
>>>    
>>> As to use - given it came from DSTO and their age - it's possible they
> were
>
>>> used in othr development?
>>>    
>>> Anyway - I've not had much luck finding a source for the 6840 or 6830
>>> manual. Anyone out there able to suggest a source for either of those
>>> models?
> ______________________________________________________________
> Premium-Rx mailing list
> Home: https://urldefense.com/v3/__http://mailman.qth.net/mailman/listinfo/premium-rx__;!!KfGNmQmE!1HyAxYiG0LJfhHT9W1kC9wqo1kMLLoeGOFst5e46JrfC1IBN47BH2MJzseB6$
> Help Page: https://urldefense.com/v3/__http://mailman.qth.net/mmfaq.htm__;!!KfGNmQmE!1HyAxYiG0LJfhHT9W1kC9wqo1kMLLoeGOFst5e46JrfC1IBN47BH2OFbO6G9$
> Post: mailto:Premium-Rx at mailman.qth.net
> Help Contact eMail:  radio at 8zo.com
> Home Page:  https://urldefense.com/v3/__http://www.premium-rx.org/__;!!KfGNmQmE!1HyAxYiG0LJfhHT9W1kC9wqo1kMLLoeGOFst5e46JrfC1IBN47BH2F7a_X4o$
>