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Title: NC 240-d, need jumper connections acc'y socket Post by: Fred k2dx on March 15, 2009, 04:46:56 PM Apparently there are several AC power jumpers required for the accesory socket. Not sure if the primary is 110/220 maybe? I need the connections. Can anyone help?
Fred k2dx Title: Re: NC 240-d, need jumper connections acc'y socket Post by: kc2ifr on March 15, 2009, 04:55:13 PM Fred,
D u have the manual? If not send me your email addy and I will send u a pdf copy. Bill wgr@roadrunner.com Title: Re: NC 240-d, need jumper connections acc'y socket Post by: WQ9E on March 15, 2009, 05:22:53 PM Fred,
Take Bill up on the manual offer and be aware that if you did not get the matching speaker for the NC-240D you will need to add an external audio output transformer (suitable for push/pull 6V6 tubes, around 10K, to you speaker impedance). There is no output transformer in the receiver itself. The full B+ voltage appears at the speaker terminal so make sure you are clear on the hookup before moving forward with it. X2 requires a dummy plug with pin 3 shorted to pin 4 and pin 1 shorted to pin 7 for normal operation. The B+ terminals are available on the back for receiver muting and they are in parallel with the front standby control. Rodger WQ9E Title: Re: NC 240-d, need jumper connections acc'y socket Post by: Fred k2dx on March 15, 2009, 05:46:38 PM Ok fine. Thanks guys... yes I do have the matching spkr - so I realized that it was a HiZ output but didn't know B+ was present. Kind of thought it was a 600 ohm output. The shorting plug has one wire pulled out, three altogether that go to a small 4 pin amphenol plug on the other end that I suppose must be for a t/r relay. I could see that the AC went to the accesory socket and needed to do do something more for continuity. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
No, I don't have a manual. I thought I had got one but apparently not (it's been a while since I got the rx). Thanks for the quick replies! Bill I will take you up on the offer of a .pdf. I'm working on the new shack and wanted to listen on the 240d. 73, Fred k2dx |