[AMRadio] 144 Mhz. AM

Byron Tatum bjtatum at ev1.net
Tue Nov 2 06:55:13 EST 2004

    I am getting my 2 meter antenna system back up and running. One thing I have played around with is surplus FAA AM gear that can be operated on 144.400 Mhz. Although I made only pre-arranged contacts in the past I was curious if there are any reports of 144 Mhz. activity in the Houston, TX. area ?
    I have crystalled up several different pieces of equipment on the AM calling freq. of 144.400 Mhz. I have heard that this calling freq. cannot be used in some area due to interference from other modes. I guess I will find out soon but I thought I would ask.
    Right now I am working on a surplus FAA airband transceiver, it is solid state and crystal controlled, but appears will do nicely for 144 AM. Hate to invest in crystals I can't use! This unit is the TRX-102, a 1972 era design that has a good sensitive receiver and about 5-7 watts out.If others are interested I have written down the conversion info.
    I do have a few nice tube-type 50 watt plate modulated AM transmitters that cover 144 Mhz easily, these are the TV-6. They have a 4X150 final modulated by a pair of 6146's. These units are beautifully built with all sealed transformers, about 3' tall rackmount, about 130 lbs. I have one set up on 144.400 that easily puts out 50 watts of nice sounding AM. I believe I have 2 or 3 checked out and wrapped up in protective coverings in my shop.Have a full manual for it too.Have an extra tube-type receiver {RV-12} that does fairly well when crystalled and tuned on 144 Mhz.
    Anyway, I would like to find some AM friends for 144 Mhz, my antenna system will be high performance { pair of 18 ele. yagis at 100'} so will have 250 mile plus range.
    Thanks, Byron WA5THJ, located in Alvin.  

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