[R-390] Yes, another SSB demodulator for the R390X and SP600

w2xj at w2xj.net w2xj at w2xj.net
Sun Nov 29 20:43:51 EST 2020


Dunno

At one point I had 4 R-390s among others. I sacrificed one to make it all solid state. I think Perry made a good suggestion. 

Sent from my iPad

> On Nov 29, 2020, at 8:39 PM, Mike Bracey <mikebracey at att.net> wrote:
> 
>  Yeah, I'm still a little woozy after reading about it.
> Mike/ KE5YTV
> 
>    On Sunday, November 29, 2020, 6:34:10 PM CST, Les Locklear <leslocklear at hotmail.com> wrote:  
> 
> Whew...I got tired just from reading it.
> 
> Les
> 
> 
> ----- Original Message -----
> From: Richard Loken <rlloken at telus.net>
> To: Les Locklear <leslocklear at hotmail.com>
> Cc: Collins R-390 HF Receiver List <r-390 at mailman.qth.net>
> Sent: 11/29/2020 6:13:34 PM
> Subject: Re: [R-390] Yes, another SSB demodulator for the R390X and SP600
> ________________________________________________________________________________
> 
>> On Sun, 29 Nov 2020, Drew P. via R-390 wrote:
>> 
>> On Sat, 28 Nov 2020 19:31:28 +0000 (UTC), Perry Sandeen wrote:
>> 
>> This dovetails nicely with the "current' discussion on replacements for 
>> the oft-discussed BallasTube. Killing two birds with one stone, you could 
>> replace the 6BA6 with 12BA6 in the PTO and BFO tube sockets, and jump out 
>> the ballast tube connections. Then, remove all wiring from the ballast 
>> tube socket. Then, use the now-vacated socket for your new 6BN6 gated-beam 
>> discrininator-based product detector circuit.
> 
> Six list members had a heart attack and died when they read that suggestion.
> You should bear in mind that we are all getting quite elderly and suggesting
> a non-reversable modification to an R-390 or R-390A could cause a serious
> medical crisis.  :)
> -- 
>   Richard Loken VE6BSV            : "...underneath those tuques we wear,
>   Athabasca, Alberta Canada      : our heads are naked!"
>   ** rlloken at telus.net **        :    - Arthur Black
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