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just picked up a Motorola FMTRU 80 D, no tubes, no crystals, no dynamotor,
otherwise seems to be complete. If you are interested, contact me at the email address on my web page and I can send you a picture. This unit is dated 1953 This site http://www.wb6nvh.com/Moto42/Moto42.htm has interesting info on it: 80D and 140D: These were the industry standards in the 1950's and made in the greatest quantity.. The FMTR- or FMTRU-80(D) and FMTR- or FMTRU-140D are 15" wide cased mobiles which usually used Sensicon receivers with high power transmitters. In some instances, a less expensive "Unichannel" receiver was used. The 80D used a pair of 2E26's while the 140D used a single 829B in the transmitter power amplifier. The 80D was nominally a 30 Watt transmitter while the 140D was nominally a 60 Watt transmitter. The power supply used a vibrator for the receiver and a dynamotor for the transmitter. The Research Line enjoyed widespread popularity and such a long service life that most of them were converted to 12 volts after the auto industry switched battery voltage standards in 1956, and many were also converted to comply with "narrow band" FM requirements mandated by the FCC in the early 1960's. In the mid-1960's, Motorola even offered a field modification kit which replaced the vibrator/dynamotor power supply in the 80 and 140 series with a 12 Volt transistorized power supply, which included a heat sink which bolted to the front panel and instructions to overstrike the model number on the ID plate to read FMTR-140(T) or FMTR-80(T) as appropriate. The chassis used in these mobiles were also used in all manner of upright cabinet base stations, desktop base stations, repeaters and so forth -- Bill - www.wbnoble.com |
#2
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On Jul 31, 10:14*pm, "Bill Noble" wrote:
just picked up a Motorola FMTRU 80 D, no tubes, no crystals, no dynamotor, otherwise seems to be complete. *If you are interested, contact me at the email address on my web page and I can send you a picture. *This unit is dated 1953 This sitehttp://www.wb6nvh.com/Moto42/Moto42.htm*has interesting info on it: 80D and 140D: These were the industry standards in the 1950's and made in the greatest quantity.. The FMTR- or FMTRU-80(D) and FMTR- or FMTRU-140D are 15" wide cased mobiles which usually used Sensicon receivers with high power transmitters. In some instances, a less expensive "Unichannel" receiver was used. The 80D used a pair of 2E26's while the 140D used a single 829B in the transmitter power amplifier. The 80D was nominally a 30 Watt transmitter while the 140D was nominally a 60 Watt transmitter. The power supply used a vibrator for the receiver and a dynamotor for the transmitter. The Research Line enjoyed widespread popularity and such a long service life that most of them were converted to 12 volts after the auto industry switched battery voltage standards in 1956, and many were also converted to comply with "narrow band" FM requirements mandated by the FCC in the early 1960's. In the mid-1960's, Motorola even offered a field modification kit which replaced the vibrator/dynamotor power supply in the 80 and 140 series with a 12 Volt transistorized power supply, which included a heat sink which bolted to the front panel and instructions to overstrike the model number on the ID plate to read FMTR-140(T) or FMTR-80(T) as appropriate. The chassis used in these mobiles were also used in all manner of upright cabinet base stations, desktop base stations, repeaters and so forth -- Bill *-www.wbnoble.com Wow. the 80D was the first 2 meter fm rig I ever owned. Got it from Western Electric via local radio club. Installed in our 1963 Plymouth Valiant. Seemed like it took up most of the trunk space. I think it was dual channel, but that was not a problem as there was only one FM repeater in Portland at that time. One channel repeater and one simplex. Ah, those were the days! Paul, KD7HB |
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