Thanks Larry. I have switched the break in to "ON" and had no mute. I have 12.95 vac at terminal 9 on the terminal board on the rear of the rcvr with the break in switch on and 1.68 vac at terminal 9 when the switch is off. 73, John, K5PGW
----- Original Message ---- From: Larry Szendrei <[email protected]> To: Discussion of AM Radio in the Amateur Service <[email protected]> Sent: Wed, December 2, 2009 1:43:22 PM Subject: Re: [AMRadio] Muting the R390 on transmit > Thanks for the reply, Grant. My R 390 doesn't mute when terminal 9 is > grounded. I have connected an alligator clip lead to terminal 9 and then > connected the other end of the clip lead to terminal 16 which is ground > and there is no effect. I can't figure out why there is no effect when > terminal 9 is grounded. What do you think, Grant? I do not have a manual > or schematic for the R390. 73, John, K5PGW > You didn't mention whether the Break In switch was "on", which, as Grant said, must be for it (=grounding the break-in terminal) to mute the receiver. Or, maybe there is a problem in that circuit in your R390. I used this function on my R390/URR, and it worked exactly as Grant described. 73/GL, -Larry/NE1S -- Pay a visit to my amateur radio web page at: ne1s.rfburn.org ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: [email protected] To unsubscribe, send an email to [email protected] with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: [email protected] To unsubscribe, send an email to [email protected] with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
