Com-Spec is also the source of the Selectone line of products.

Note:   Com-Spec will sell direct to the end user and can easily beat Hutton's, Tessco's and most others prices.
Call 800-854-0547 or 714-998-3021 from 8:00am to 4:30pm (Pacific time zone), Monday to Friday

If you have any data sheets that are not included below, please let us know!
We can have them scanned and then return them to you.

In the land mobile (e.g. commercial 2-way) world, there are (or were) three different companies that used the initials CSI.   The most famous is Communications Specialists, listed above, and whose products are on this page.   Then there is Connect Systems Incorporated, which made repeater tone panels for the commercial market and and autopatch equipment for the amateur market. They are located in Ventura, in Southern California (their previous address, still on the title pages of some of the downloadable manuals, was in Torrance, California) and they have their own web page at this web site.   The third CSI company was Communications Systems Incorporated company in Lynnwood, in Washington state, which is long out of business.   That "CSI" made, among other things, the CSI-32 and CSI Super-32 repeater tone panels that are a blue-gray color. Copies of the manuals are on the "Other Manufacturers" page at this web site.   If anyone has copies of other manuals we'd appreciate a chance to scan them.
The three CSI companies are not (and were not) linked in any way
(except in the minds of a few clueless customers).

Click here to jump down to the Selectone products

Com-Spec Data Sheets

Many of the Com-Spec encoder products had a low output impedance which can load down other circuitry when connected. This is not a design fault of the Com-Spec product. Depending on the application it may be necesary to add a series restor between the encoder and the destination circuitry. The value of the resistor will range from 1 K to 47 K depending on the application.

	Com-Spec 2003 catalog   1.13 MB PDF   courtesy of A. Nony Mous
	DCS-23 Instruction Sheet / Schematic   364kb PDF   courtesy of A. Nony Mous This is a universal DCS encoder decoder. Think "TS-32" for Digtal Coded Squelch (DCS). The more common name is Digital PL (DPL), a Motorola trade mark or DCG, a GE trademark.
	HP-1A Instruction Sheet / Schematic   200 KB PDF   This is a discontinued product. It was a stand-alone high pass audio filter board similar to the one contained in the TS-32 or TS-64 and is easily duplicatable on perfboard.
	HP-1B Instruction Sheet   108 KB PDF   This is a discontinued product and consisted of the HP-1A packaged as a hybrid chip (that was manufactured by Murata for Com-Spec), and it is no longer available.
	ID-8 Instruction Sheet / Schematic   364kb PDF   courtesy of A. Nony Mous This is a generic IDer board that can be added to almost any repeating radio. See the article on the Micor page.
	ME-3 Instruction Sheet / Schematic   courtesy of Skipp This was an encode only subminiature encoder that used plug-in ceramic resonators that had two pins on the bottom an an ink-stamped tone code on the top. The PC board had a range jumper - if the unit does not produce the correct tone you need to check for the absence or presence of the jumper. There was also a ME-12 version of this that was in a plastic box with a rotary switch on the front and 12 tone element sockets inside.
	RB-1 Instruction Sheet / Schematic 86kb GIF file (courtesy of Eric Lemmon WB6FLY) The RB-1 adds reverse-burst to ME3s, TS-32s and other encoders. To change the duration of the reverse burst adjust the value of C3 or R13. Here's the same file as a 95kb PDF (courtesy of Eric Lemmon WB6FLY) This is a discontinued product but it's easy to duplicate on perfboard. Also, this circuit will work in any system that uses a reed-based decoder and also with some electronic decoders. It may not function with some newer radios because some manufacturers use 120 degrees phase shift for reverse burst instead of the 180 degrees that this unit provides.   If anybody wants to modify it for 120 degrees shift let us know and we'll add the info here.
	SS-32P Instruction Sheet / Schematic   Encode only     IC-110 version
	SS-32smp Instruction Sheet / Schematic   Encode only, very small (surface mount version of the SS-32P)
	SS-64 Instruction Sheet / Schematic   Encode only, with optional reverse burst
	TP-3200 community repeat panel documentation: This unit does all 51 PL/CG/CTCSS codes and 106 DPL/DCS codes While this is a terrific unit do not plan on using the internal IDer in amateur radio repeaters. The ID code speed is fixed at 25 WPM and can not be slowed down. It is, however a very useful unit that will allow your repeater to respond to multiple tones on the input. TP-3200 Manual   7.4mb PDF courtesy of Com Spec. This is a 24 page PDF, the first two are the product brochure. Then is the main manual, including schematics, system parameters, level adjustments, over-the-air DTMF programming information, PC board layouts, and more. TP-3200 Instructions   A 31kb PDF with 99% of the above info. TP-3200 Schematic   55kb PDF courtesy of Com Spec. TP3200 Password Reset Procedure   How to gain access to the unit when you are locked out.   49kb PDF courtesy of Com Spec. Connecting a TP-3200 to a Micor repeater station   99kb PDF file Connecting a TP-3200 to a MSR2000 repeater station   39kb PDF file
	TP-38 community repeat panel documentation:       This was the predecessor to the TP3200. The basic unit does not do digital squelch / DCS / DPL / DCG and it cannot be added. Programming sheets (oriented sideways for printing):   page 1   page 2   page 3 TP-38 Short-Form Programming Info   5KB PDF TP-38 Manual   944 KB PDF TP-38 Reset Info   3.2 KB PDF TP-38D Schematic   108 KB PDF TP-38 DCS Supplement   6 page, 416 KB PDF DCS (also known as DPL or DCG) was not included in the basic design and was implemented as an add-on board that was available as an option or could be field installed.
	TE-64 Instruction Sheet     211 KB PDF courtesy of N7FM     Photo   Photo by A. Nony Mous This is a scan of the sheet that was packed with the unit, somewhat cleaned up with a graphic editor. It contains the schematic, tone chart, programming, etc. Supposedly there was a second page.
	TS-32 Instruction Sheet   This is the full 6-page 1.9mb PDF data package containing the schematic, parts list, programming instructions, power connections, receiver connections (audio muting), high pass filter connections, multi-tone information, troubleshooting, etc.   IC-107 version
	The TS32 electronics spawned several other products including several boxed products that used a rotary switch to select the tone. Some just had the switch, some also had a two-digit digital display. Here's a photo of a non-display unit.
	TS-32HB Instruction Sheet / Schematic   4 pages, 262kb PDF.   Encode / Decode   courtesy of Eric Lemmon WB6FLY
	TS-32P Instruction Sheet / Schematic   1 page, 50kb PDF.   Encode / Decode     IC-110 version
	TS-64 Instruction Sheet   This is the full data package containing the schematic, tone chart, programming, etc. The TS-64 can not only send "Reverse Burst" (160ms of 180 degrees phase shifted tone after the keying line is no longer active), but it will also stop decoding virtually instantly (specs say 160ms) on a detected phase change, otherwise known as "Reverse Burst", "Squelch Tail Elimination"... etc., if your encoder at the sending end does it (normally it's rated to stay open for 350ms on loss of tone). Unfortunately, it only has the 180-degree phase shift, because that is really easy to do. It cannot encode or decode a 120-degree phase shift, so that means it is fairly useless with late model Motorola radios (and a few other radio brands that use 120 degree shifts). On the other hand, another nice feature that shows that the designer did a lot of thought is the encode tone output waveform starts and stops at zero crossing thereby preventing any "click" when turning the tone on and off. If your second-hand TS-64 doesn't seem to follow the standard chart in the area of the 32 standard tones, don't panic. There were an unknown quantity of early units made with the tone table rearranged to allow for a rotary switch to ground one of the six tone select lines to select six specific (customer requested) tones. It you have a perfectly operating second-hand unit except that the tone table is differently arranged you may have one of those specials. Note: The preceeding product, the TS32 was supplied with colored wires that could be plugged onto any pin, therefore it was useless to give hookup instructions based on wire color. The TS64 has consistent wire colors so it's worth presenting this list: Red is + DC power in Black is ground The green wire is the AUDIO INPUT. Hook this to the receiver discriminator. Ground the violet HANGUP wire or it will stay in "pass the audio" mode all the time (i.e. it will never decode). This is the biggest single error in connecting on the TS64 - if it is acting like it's dead right out of the box (i.e. not decoding) make sure that the hang-up lead (the purple wire) is grounded. Use the white MUTE wire for decode logic output. By default it uses open collector active high signalling (i.e. this signal will go high for decode), but it needs a resistor from this pin to a voltage source to do it. If you need active low install jumper JP7 to cause the signal to go to ground on decode. The yellow wire is the ENCODE OUT. This is the audio that is run to the transmitter modulator. The orange wire is the PTT input. Groudn this to switch the tone encoder on. When ground is removed the encoder phase is shifted, and the encoder stops when the 160ms is over. The gray wire is the PTT OUT. This signal goes low when the orange wire is grounded and stays low for the duration of the grounded input plus the reverse burst timing. In normal mobile radio use the PTT lead from the microphone would be disconnected from the radio and be connected to the orange wire, and the grey wire be connected to the point in the radio where the microphone PTT lead was. The blue wire is the FILTERED AUDIO OUT. The path from the green wire (in) and the blue wire (out) has a high pass / low cut audio filter in line, designed to remove the subaudible tone from the user audio. This is an installers choice - You can feed the blue wire back into the receve audio connection. This type of radio surgery is very radio dependent and cannot be covered here. Many radios have a high pass filter in them from the factory and in that case you can simply tape off the blue wire and ignore it. All of the above is in the Instruction Sheet that can be downloaded from the above link. There is no really easy way to eliminate the reverse burst (and why would you want to?). If you absolutely have to, just ground the PTT IN Lead (the orange wire) then switch the encode tone output (the yellow) wire, perhaps with a set of reed relay contacts in series with the audio, or a FET-based audio pinch-off switch.

Modifications