If its the one I'm thinking of, I have one of those. It has a tertiary winding for the screens and a funky secondary max. I of 0.193 A(?) The one I was looking for but needs repaired is 10300 Pri. and 4300 sec. If memory serves me, it was used in a KW transmitter. Mine goes in my RCA ET-4336F transmitter. A rig that uses 813's X 805's for 250 watts, (very lightly rated. Mod-U-Lator, Mike(y) W3SLK ----- Original Message ----- From: "D. Chester" <[EMAIL PROTECTED]> To: <amradio@mailman.qth.net> Sent: Sunday, December 02, 2007 12:02 AM Subject: [AMRadio] Re: RCA 1:1 mod xfmr
The RCA 1:1 ratio mod xfmr @ 5500 was made for liberty ship transmitters during WW2. It was not designed for voice, but for MCW, so it was meant for running a single tone, and is not high-fidelity. That's why its audio quality is on par with the lowest cost "ham radio quality" modulation transformers, nowhere as good as RCA broadcast modulation transformers. The quality is quite acceptable if you are not looking for hi-fi audio. With the 1:1 ratio, you should be able to get incredible positive peaks. The properties of the transformer, as listed on the name plate, do not make sense if you calculate using ohm's law, that is, current through the secondary vs total power rating vs nominal impedance values. Don k4kyv ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
