I still have one of those beasts sitting on the shelf in my storage building. I converted it to AC power, and used it on 52.525 in the early '60s. I don't remember the TVI aspect on this particular rig, but I do remember having plenty of TVI back in those days. I had to equip all my neighbors with 6 meter traps in the 300 ohm antenna leads to the outside antennas. That seemed to clear up most of my TVI problems.
73 - Jim W5ZIT -----Original Message----- From: [EMAIL PROTECTED] To: [email protected] Sent: Sun, 18 Feb 2007 1:12 AM Subject: [Repeater-Builder] Re: 1953 Motorola BaseRadio for 6meters I remember having a similar 6 Volt Tx/Rx version in the mobile. That vintage Xmtr used 807's in the final for 50 Watts output and an AT cut FT243 xtal running at 1.0943 MHz with 48 times multiplication to get adequate deviation of +/-15 kHz. The xtal would rattle in it's holder. (that was normal) It was a MONSTER TVI generator in it's day because it put out "spurs" +/- 1.09 MHz either side of the main carrier for about +/- 5 MHz. They were only down about 20 dB due to the large 48x multiplication and not enough selectivity in the stages to eliminate the unwanted emissions. (There's a story here how I ended up on 6M FM back in ~1961 on 52.525 & 52.640; wow, it's been a long time!) George, WA2VNV. ________________________________________________________________________ Check Out the new free AIM(R) Mail -- 2 GB of storage and industry-leading spam and email virus protection.
