Post Number: 30
|Posted on Sunday, February 05, 2006 - 12:55 am: ||
--Hi, all. I was wondering what the power rating (RMS) of the MRF455 transistor is? I am thinking of purchasing the President Lincoln 10 meter transceiver to use as a continuous beacon. I figure that my power output will be 20 watts or less, fed into a Maco V58 5/8 wave vertical antenna. Just curious if this transistor will handle this power on a continuous basis. Thanks.
Post Number: 2370
|Posted on Sunday, February 05, 2006 - 12:26 pm: ||
rf parts rates it at 60 watts PEP, so 15 RMS carrier is probably it. even at 15, it probably needs added heat sinking on the lincoln. there was a 477 mod for the 2510, it barely got 40 PEP, & they rated it for about 7-8 watts RMS carrier, with additional heat sinking.
Post Number: 64
|Posted on Monday, November 27, 2006 - 12:28 am: ||
My Lincoln is set up so that if the RF power knob is at the 12 O'Clock position it keys 10-15 watts and swings to about 65 watts. If I turn it all the way down it does 1-4 watts depending onthe metter used and swings to about 10-13 watts If I turn it up full tilt I get 35-40 Watts with it swinging about another 5 watts. These are based on AM mode. SSB I can not recall the output but it was exceding the rated wattage of the MRF455. If you talk on SSB a lot the Motorola transister sound better then the higher output Japanese transistors. They have a warmer sound to them more tube like then 2879 or 2290. They do not have the power though I think the too things might be related.