Some of the earliest postwar 2-means California Highway Patrol installations began out with a Police Cruiser receiver, and added each Motorola and RCA 39 Megacycle VHF FM transmitters later, within the case of the RCA by modifying the RCA management head to operate the P-69-18 Motorola receiver ! These receivers were the primary and last to offer the "Magic Eliminode" noise limiting function, which was an utility of a a lot earlier "spark period" method which utilized a sign from a "noise antenna" out of part with the signal from the actual antenna, the idea being that this may cancel the noise. The receivers are somewhat good in these radios. This appears to have been Motorola's solely AM mobile transmitter, and is a two piece set wherein the power provide and modulator are in one case and the RF part in a second. The P-69-17 will not be notably delicate and with the low power of the companion T69-20A transmitter, range would have been somewhat less than that of a fashionable CB radio.

The P-69-17 was often trunk-mounted, in distinction to medium wave receivers, and shared the transmitting antenna through a T/R relay. P-69-17 (P-69-17A): 8 tube VHF AM mannequin. The pinnacle for the P-69-17A added a toggle swap for squelch between the pilot lamp and the quantity management. Interior view of P-69-17A below. The brand new volume management was then a DC remotely managed design fairly than the speedometer type cable of earlier fashions. Case type in front is slightly totally different from others; holes for alignment points are present a large handle is mounted on the front panel (evidently it was thought this new "UHF" set would want extra frequent service !) Used then-new 1853 (6AB7) VHF tube as RF amplifier. Case primarily the same as other Police Cruiser models, however be aware the situation of the "Police Cruiser" nameplate and the lack of capped tuning adjustment holes. The photo beneath shows a typical early P-69-18 with a black housing and a red nameplate. Shown under is an unusual, apparently early P-69-18 with a blue nameplate and a handle on the higher cover. This cowl is friction-fit solely, there are not any screws securing it as on different fashions.

P-69-14A by means of P-69-14B: No info is accessible on how these fluctuate from the unique P69-14, or whether or not there really have been P69-14A or B fashions, but as there was a "C" model, presumably there were. It should be noted that tens of hundreds of these units were manufactured throughout a thirteen year interval, there is no such thing as a collector following for this gear, and it's not wanted. The management head is the P-8022 as used on wartime and postwar Deluxe Line FM sets. No P-69-11, P-69-15 or P-69-16 sets are believed to have been manufactured. The spotter accountable swiftly known as out a compass bearing, and a dozen voices soon known as out, I have him! A burly seaman hurled a life-belt, and Jedburgh struck out throughout the few feet to succeed in it. The first man out of the water was, Jedburgh guessed, the gunner; a brief, swarthy fellow in Confederate grey, who proved taciturn and sullen within the face of a pair of reciprocators trained on him by sailors of the crew. A naked minute later, as he drew closer to his prey, Jedburgh was in a position to discern that the dirigible’s aspect was embellished with an awesome flag - a diagonal blue cross, bespangled with white stars and rimmed with white, on a pink ground.

In fact, 100 yards of wood rails had perforce been laid down the slope from the hut’s nice double doorways - but even that job had been left till the very afternoon before this day. As an aside, the above control head, final produced in roughly 1949, was nonetheless in use by the Los Angeles Police Department even in1960, and possibly past, operating a custom made cellular radio with a low frequency AM receiver and a VHF transmitter. The relay in the higher proper nook has been added by somebody for functions unknown, most likely a receiver muting relay to be used with a transmitter. Note that a plug button covering an access gap exists on the 60P on the higher proper nook however doesn't on the "60" automotive broadcast radio. Note the frequency scale has been modified to reflect the police range. This had the disadvantage that in instances the place the receiver was a low frequency type, full duplex operation was not attainable.