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426 West Taft Ave.   Orange, Calif. 92865
Phone: 800-854-0547     Fax: 800-850-0547
http://www.com-spec.com
 		   

E-mail:   •  

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 compnaies 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, Washington, 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

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.
HPF-1 Instruction Sheet / Schematic     Anybody have a data sheet to scan? This is the stand-alone high pass audio filter board whose circuit is similar to the one contained in the TS-32 or TS-64.
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.
      There was also a 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)
      Note: This is a discontinued product.   When current stock is gone, that's it (but it's really easy to duplicate).
      Also, this circuit will work with any radio that uses a reed-based decoder and 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 speed is fixed at 25 WPM and can not be slowed.
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.
TR-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 get 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:       (Note that the TP-38 does not do DPL)
This was the predecessor to the TP3200
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
TE-64 Instruction Sheet   This is a scan of the sheet that was packed with the unit, somewhat clenaed up with a graphic editor. It contains the schematic, tone chart, programming, etc. Supposedly there was a second sheet. Scan courtesy of N7FM.     211 KB PDF.
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
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 this 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 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:
  1. Red is + DC power in
  2. Black is ground
  3. The green wire is the AUDIO INPUT. Hook this to the receiver discriminator.
  4. 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.
  5. 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.
  6. The yellow wire is the ENCODE OUT. This is the audio that is run to the transmitter modulator.
  7. 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.
  8. 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.
  9. 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

Modification of the TS-32 for shorter release time   By Bob Schmid of S-Com Industries
Modification of the TS-32 for faster response time   Information supplied by Com-Spec

Other Information

Five Position DIP Switch Table for the TS‑32 and other five-switch models   By Mike Morris WA6ILQ
     This chart has both the "Group A" (subaudible) and the "Group B" (audible) tone tables
Six Position DIP Switch Table for the TS‑64 and other six-switch models   By Mike Morris WA6ILQ

Hookup Information

Generic notes on TS-32 Hookup   By Kevin Custer W3KKC
TS-32 To GE Master Exec   112kb PDF   from Com-Spec
TP-3200 community repeat panel to Motorola MSR-2000 repeater   39kb PDF   from Com-Spec
TP-3200 community repeat panel to Motorola Micor station   99kb PDF file   from Com-Spec
TS-64 to Mitrek mobile hookup   from Com-Spec
Com-Spec also makes a little daughterboard for the TS-64 so it'll plug right onto the P908 pins in a GE Mastr II station (right in place of GEs tone board). Look for the TS-64MSTII on their price sheet. There is a modification article on the TS-64MSTII on the GE page at this web site.

In 2000 Com-Spec purchased

and continues to support the products that were current at that time.
Clicking on the logo above will take you to the Selectone products web site.
Note: Selectone used the "DigiTone" and "SmarTrunk Systems" names on some products.

Here are some Selectone products data sheets:
...and if you have any data sheets we don't, please scan them and send them in!

Selectone ST-100 CTCSS Encoder   178kb PDF   Donated by Eric Lemmon WB6FLY
Selectone ST-101 CTCSS Encoder-Decoder   300kb PDF   Donated by Eric Lemmon WB6FLY
Selectone ST-101   8.5x11 format: page 1   page 2   page 3   page 4   Tunable miniature encoder-decoder.   Donated by John J. Riddell VE3AMZ
Selectone ST-104 CTCSS Encoder-Decoder   Encoder-decoder with RX PL filter.   342kb PDF   Donated by Eric Lemmon WB6FLY
Selectone ST-104   8.5x11 format: page 1   page 2       Large format: page 1   page 2   Donated by Laryn Lohman K8TVZ
Selectone ST-133   non-tunable, dip-switch programmed, encode only.   MX315-based.
Selectone ST-138   Donated by A. Nony Mous
       This encode-decode board was used in some ACC products, and has an RX audio filter.
       To recognize it look for an MX-355<some letter> chip and a 6-position DIP switch.
       It is interchangeable with the ST-104.
Selectone ST-139   a DIP-switch replacement for the ST-146 encoder-decoder.   MX-465 based
Selectone ST-140   Replacement for the ST-100 encode-only unit.   Tunable.
Selectone ST-146   Replacement for the ST-104 encoder-decoder (with audio filter).
Selectone ST-1600 Community Repeater Tone Panel:     These four sections all donated by Wes Fay KA7UEC
      System Documentation   8.5x11 format:   page 1   page 2   page 3
      Selectone ST-1600 Schematics   8.5x11 format: page 1   page 2  
      Selectone ST-010   8.5x11 format: page 1   page 2   A carrier control timer module
      Selectone ST-012   8.5x11 format: page 1   page 2   page 3   page 4   An audio-squelch module
Selectone ST-180:    
      Selectone ST-180 Installation and Operation Guide   3.2Mb PDF
      Selectone ST-180 Summary   1.6Mb PDF


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Web page design, layout, hand-coded HTML and Copyright (c) by Mike Morris WA6ILQ March 2002.

This web page, this web site, the information presented in and on its pages and in these modifications and conversions is © Copyrighted 1995 and (date of last update) by Kevin Custer W3KKC and multiple originating authors.   All Rights Reserved, including that of paper and web publication elsewhere.