Dennis: sri I dont know anythingre ur rig but would like to hear it on 160 (or 75) this winter. Good luck DE Charlie, K0NG ..
Quoting [EMAIL PROTECTED]: > Guys, > > Just came into possession of an interesting rig. Front panel and top lid > labeling sez it was made for the US Department of the Interior Grazing > Service > by the Radio Specialty Manufacturing Service in Portland Ore. No dates. > > Configured as a transmitter and receiver in a 10.5X19X16 (HWD) steel cabinet > > sharing some common PS circuits. The xmitter is crystal controlled, 6K6 osc. > > driving a pair of 807s parallel connected with a pi output tank. Came with a > > 2558 xtal in place. Modulated by a pair of 6L6s driven by a 6C8 dual triode > driven in turn by a 6Q5 triode speech amp which appears to be setup for an > xtal > mic. Thordarson CHT multimatch mod transformer. The second 807 appears to > have been added later (different socket type and odd placement on the > chassis). > > Receiver lineup: 6K7 RF, 6K8 mix/osc, 6K7 IF (freq unk), 6Q7 det/first audio, > > 6K7 BFO and 6K6 audio out. There is also a 6H6 which appears to have been > used in a squelch circuit which I haven't doped out yet. The 6K8 osc. half > appears to have been modified for xtal control somewhere along the line with > a > (5-pin tube) socket added on the front panel. The osc. coil was left in > place, > however. Frequency range 1.6 - 3.5 mHz according to the receiver tuning > dial. > Got it with a 2264 receive xtal in place. > > I would put construction somewhere in the 40s based on the components used > which included cloth covered wiring, Sprague "back beauty" paper caps and a > couple of knobs on the front which could only have come off a BC-610 TU. > Front > panel labeling done with neat little engraved Bakelite and metal plates. > Cabinet and chassis custom made with a professional look about them. Many > tube > sockets and other chassis mounted components riveted in place. The chassis > does > not slide out: access to the underside components requires removal of a > bottom > plate. Weighs in at about 60 lbs. > > Oh yes, 80 LV rectifier and a pair of 866 Jrs. > > Anyone have more on the rig, company, other, etc? > > Thanks. > > Dennis D. W7QHO > Glendale, CA > _______________________________________________ > AMRadio mailing list > [email protected] > http://mailman.qth.net/mailman/listinfo/amradio >
