[Premium-Rx] R: Racal RA6840 manual.

[Dottor Federico Baldi]

Try AMERICAN MILSPEC. 73 de Federico IZ1FID

-----Messaggio originale-----
Da: premium-rx-bounces at mailman.qth.net <premium-rx-bounces at mailman.qth.net> Per conto di Tom B
Inviato: sabato, 22. agosto 2020 04:19
A: premium-rx at mailman.qth.net
Oggetto: Re: [Premium-Rx] Racal RA6840 manual.

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?
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