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Technical Information on Products by
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 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. |
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| 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. |
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| 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. |
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| 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. |
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| 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.
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| 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.
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| 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. |
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| 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:
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!
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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 | |
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Selectone ST-104 CTCSS Encoder-Decoder Encoder-decoder
with RX PL filter. 342kb PDF Donated by Eric Lemmon WB6FLY Older version of the Selectone ST-104 8.5x11 format: page 1 page 2 Large format: page 1 page 2 Donated by Laryn Lohman K8TVZ |
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| 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. |
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| 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 |
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| Selectone ST-180: Selectone ST-180 Installation and Operation Guide 3.2Mb PDF Selectone ST-180 Summary 1.6Mb PDF |
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| Selectone ST-800 Subminiature DTMF Decoder 102KB PDF donated by A. Nony Mous |
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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.