Regency, RELM, and Wilson
Technical Information and Manuals
Assembled by Mike Morris WA6ILQ

Repeater-builder is looking for additional info on the Regency and RELM repeaters, bases, mobiles, etc.
Photos, like those of the K500 scanner below, would be appreciated.

Regency Electronics was an old-line electronics manufacturer from the 1950s and 1960s... I still have an early Regency TR-1 pocket transistor radio, and a MR-series tube-type tunable VHF monitor tabletop receiver from about 1961 or 1962, both of which my dad brought home one evening... he was a commercial photographer then and was doing some work for an article on Christmas holiday electronics gifts for Popular Mechanics magazine. The Regency representative gave him two of the items after the photo shoot was finished. A number of years later I found a matching tunable low band receiver at a neignborhood garage sale. All three still work perfectly today. By the 1970s Regency had low-end land mobile equipment in their product lines, both VHF and UHF, plus some amateur VHF and UHF radios. The Civil Air Patrol had been using them, under the Regency brand name, for many years at that point. Regency's last consumer product lines included programmable scanner receivers, including the "M" series, which were the first synthesized scanners that covered the amateur 10 and 2 meters and 440 MHz band without mods, and advertised as such. A programming trick appeared soon after in the Radio Communications Monitoring Association (RCMA) Bulletin on how to get out-of-range frequencies into it, like 52 MHz amateur radio channels. In the late 70s Regency bought Wilson mainly for the Wilson-designed mini-handheld that was 1/4 the size of the existing Regency equivalent product, but left the Wilson HF & CB antenna line intact. Later on Regency Electronics abandoned the consumer electronics market, and today the name is unknown, except as the first two words in Regency Electronics Land Mobile, better known as RELM. Nowadays RELM is fully in the land mobile business, and has bought Uniden and the Bendix-King land mobile product line (BK kept the Avionics products). RELM did not abandon the BK or Uniden names, both still exist as if they were separate companies. But the Regency Electronics name is, unfortunately, forgotten except by a few. Here's one: Dr. Steve Reyer's TR-1 Page. And Don Pies, one of the founders of Regency, has his own page.

Land Mobile Radios

	Regency MCCU repeater manual   6.2mb PDF file, donated by Steve Bosshard NU5D
	RELM MPV32 and MPU32 Instruction Manual   1.01 MB PDF donated by A. Nony Mous The last page indicates the MPU32B is Part 22, 74, 90 and 95 accepted. Programming the RELM MPV32 and MPU32 radios   3kb, A step-by-step procedure donated by Arthur Bross KC7GF This was donated a couple of years before the instruction manual PDF showed up.
	Programming the RELM MPV32D radios   44kb, donated by A. Nonymous
	Programming the RELM RH250, RH600 and RU150 radios   3kb, donated by Arthur Bross KC7GF
	This is the complete, front cover to last page, manual for the Regency RH250 and RH256, and Wilson RH2516 as one 11 Mb PDF file donated by Jerry Coffman WB5RUA.   He created it from the 11.5MB zip file containing 89 separate JPG files, one per page, donated by Brett Kitchens KF4SQB.
	Programming the RELM RH606 radios   4kb, donated by Arthur Bross KC7GF
	RELM / Wilson WHS150 and WHS450 Instruction Manual   1.96 MB PDF donated by A. Nony Mous THis is oen of the Wilson products that Regency acquired before the name change to RELM. Page 22 (second to last) indicates Part 90 and 95 acceptance. Programming the WHS150 16-channel handheld radio     3kb, donated by Arthur Bross KC7GF This was donated a couple of years before the instruction manual PDF showed up.
	Programming the Wilson RH250, RH256, and WH516 radios   These are the sloping front land mobile radios that look like the Regency M-series scanners. RELM manual number 0300-40427-800   4.6mb
	Regency ARU9PL / TRU-152A radio service manual.   2.7 MB PDF   This is the 15w two channel crystal controlled mobile radio that was built into an M-series scanner case.   It was manufactured either for 450-482 or 482-512 MHz, and range changing is difficult to the point of being not worth it. The radio was shipped with crystals for either 465.500 transmit / 460.5 receive or 494.500 transmit / 491.500 receive pre-installed and pre-aligned, and the oscillator design was so poor that the designer had to use clip-on heaters on the crystals to maintain frequency stability. A CTCSS tone board was optional. The design was fairly fluid, there were at least 7 versions of the main board.

Monitor Radios and Scanners

	Regency ACT-R20/6 Monitoradio Receiver Instruction manual   500 Kb
	Regency TMR-8HL scanner owner's manual   301 Kb
	Regency M-400 scanner owner's manual   4.1 Mb   This manual covers the "40" channel model, the M100 is the 10-channel version. And note that the radio only actually lets you enter 30 channels into the scan memory, and while the VHF search increment is 5khz the UHF one is 12.5khz (i.e. it can't do either 6.25 or 20kHz spaced channels). One trick with the Regency M100, M400 and K500 scanners: As shipped the advertised frequency ranges were roughly 29.5-50, 144-174, and 440-512 MHz. You get an error message when you try to program a frequency outside those ranges (for example 52.525 MHz). You can defeat the scanners preprogrammed frequency limits by entering an additional decimal point first, for example, to enter 52.525 MHz you would press the keypad in the sequence of (dot)52(dot)525(enter). If the VCO will lock the scanner will accept it (if it doesn't it displays "Poor F."). The only side effect of this trick is that if you have an out-of-band frequency in the scan loop it steps to that channel, then hangs until the VCO sweeps across to and locks onto the frequency. The slow slew rate causes the scan rate to pause for a noticeable amount of time. I suspect that this out-of-band feature was included more for production line test purposes than for anything really useful.
	Regency "Touch" K-500 scanner owner's manual   647 Kb   This manual covers the 40 channel model, the K100 is the bare-bones 10-channel version. The "dot trick" from the M400 (mentioned above) works on the K500 model as well. Here are two photos by Bob Codeglia KD6ANY:   front photo       rear photo