[R-390] R390A SSB Reception

[fdigio1]

Hi, have you tried with:https://www.kvg-gmbh.de/Many years ago, they made for me some 77.5 kHz crystals' even if now in their web site, the lowest frequency available is higher. You could ask. Best regards Francesco Di Giovanni - IN3XZP Inviato da smartphone Samsung Galaxy.
-------- Messaggio originale --------Da: Stan Gammons <sg063015 at gmail.com> Data: 11/08/19  03:51  (GMT+01:00) A: r-390 at mailman.qth.net Oggetto: Re: [R-390] R390A SSB Reception Hi Perry,Long time no type.Yes, low frequency crystals are expensive. QuartSLab wants 100 to 200 pounds each to make them. Forget that. The BFO and varactor diode ideas are good options. It would be way overkill, but I also thought about a DDS BFO built using an Arduino. I have all the parts to make one. The Treetop adapter is also an option.Thanks again for all the suggestions.73StanKM4HQEOn 8/10/19 5:01 PM, Perry Sandeen via R-390 wrote:> Yo Bubba Dudes,> Wrote: Where can I get low frequency crystals.> With the near impossibility of getting reasonable priced low frequency crystals you might want to consider the SSB adapter from Treetop circuits.  It uses the A's BFO but has all the modern circuity for fast attack AGC and such.> He is a Canadian ham that sells or ebay.  Besides the A, he has ones for the R390/URR, R392 and R388 models.> He has also developed one specifically for the SP 600.> Prices are a little over $100.> Regards,> Perrier> ______________________________________________________________> R-390 mailing list> Home: http://mailman.qth.net/mailman/listinfo/r-390> Help: http://mailman.qth.net/mmfaq.htm> Post: mailto:R-390 at mailman.qth.net>> This list hosted by: http://www.qsl.net> Please help support this email list: http://www.qsl.net/donate.html______________________________________________________________R-390 mailing listHome: http://mailman.qth.net/mailman/listinfo/r-390Help: http://mailman.qth.net/mmfaq.htmPost: mailto:R-390 at mailman.qth.netThis list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.html