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Technical Information on
Click here or on the logo above for the main Alinco web site
Compiled by Mike Morris WA6ILQ
Maintained by Robert Meister WA1MIK
Alinco USA Inc.
As of March 2009 Alinco's USA distributor / service / parts is GRE Corporation (the OEM scanner manufacturer). You can contact GRE America at:
GRE America Inc.
425 Harbor Blvd Suite C
Ph: 650-591-1400 M-F 8a-5p (Pacific Time).
E-mail: alincoparts /at/ greamerica /dot/ com
If you are driving there they are near the corner of Harbor Bl. and Industrial Road, between the 101 freeway and El Camino Real.
Yodoyabashi Dai-Bldg 13F
4-4-9 Koraibashi, Chuo-ku
Osaka 541-0043 Japan
The contents of this page, like most here at
www.repeater-builder.com, are totally dependent on donations of information.
If anyone has anything that is NOT at the Alinco web site, don't hesitate to scan it and send it in.
If you have a hint or a useful trick please consider writing it up and sending it in.
Modifications and Other Articles
|The DR135TE, DR-235T and DR-435TE radios are popular with the IRLP folks as they are
inexpensive. Unfortunately the internal CTCSS decoder has very poor performance. I mean
it is really bad - it's slow to open and can take from 1/2 second to as long as four
seconds (!) to close.
Glen Roe WA6MHA uses one as a point-to-point link from an IRLP node to the local repeater. He ended up disabling the internal decoder and adding a TS 64 Decoder. He documented the procedure here (a local copy), or you can go to http://www.irlpcables.com/AlincoTS64.html for the original writeup (offsite link).
|Microphone Jack Pinout|
Many Alinco radios use a round 8 pin mic jack with 7 pins around the
outside and one in the middle.
Click here for a photo.
There are tiny numbers molded into the
plastic on the plug and jack. Several Alinco and Kenwood radios use this pinout:
Many radios that use the 8-pin modular mic jack ("RJ-45" style) use this pinout:
With the locking tab down, and looking into the connector or at the back of the
plug the pins are numbered from left to right.
|"Data" Jack Pinout|
Many Alinco radios have a DE-9 connector on the back of the radio. When the
EJ-41/U optional TNC board (for the DR-135, DR-235, DR-435, or DR06 radios) is
not installed the ribbon cable from the
connector is plugged into the control board and audio, COR and PTT signals
appear on the pins as per the left side pinout below for connection to an
external TNC. When the EJ-41U board is installed the ribbon cable is moved
to that board and the pinout changes to the right hand list below. The
EJ-41/U instruction manual is
here and a photo is
here. Note that the EJ-41/U
designed to fill the basic packet communication functions, such as
keyboard operations and APRS. For more elaborate operations requiring
KISS mode, digipeater mailbox functions or node operations, do not use
the EJ-41/U, instead use an external TNC like a KPC, an AEA, etc.
Heavily Biased Personal Opinion:
I do not recommend Alinco mobiles for use as a point-to-point link radio or as a repeater transmit radio. Buy a used YaeComWood or even a Motorola GM300 - but watch the duty cycle. Why? For one, the CTCSS decoder in the Alinco is slow to decode and does not release properly. Adding an outside decoder (like a Communications Specialists TS-64) fixes that but why should the customer have to buy another piece of hardware to patch Alinco's bad design?As a carrier squelch mobile, or as a packet radio, they are great... especially as a "first radio" for a new ham.
Alinco should fix their design - or copy the one in the cheapest Yaesu, Kenwood or Icom - any of those does a better job. It's not a difficult design, even my old Motrac did it better, and it was built in 1962, 50 years ago.
Secondly, the Alincos seem to work when new, but you have to leave them in carrier squelch. Plus, over time I have had nothing but trouble. I was helping a gentleman that was putting up a 2m repeater on a extreme budget. It took an original and three replacement radios over 17 months at one location before we got something that lasted - and no, we were not abusing the duty cycle, nor was the operational temperature out of spec (how do you abuse the duty cycle on a UHF control receiver?)
|Manuals and other Literature|
The official source for manuals is Alinco Manuals
Download Page at Alincos own web site (offsite link)
However the documentation on some of the older radios and other equipment are no longer there...
|DJ-180 and DJ-480 Instruction Manual 485
Single band handhelds, 2m and 440 MHz
|DJ-296T Service Notes 501 KB PDF
A 220 Mhz handheld
|DJ-G29T Instruction Manual 2.7
Dual band handheld, 220 and 902 MHz
|DJ-G29T Service Manual 3.6 MB PDF
Dual band handheld, 220 and 902 MHz
DR-M06R, DR-135LH, DR-03T, DR-M03R Instruction Manual 1.22 MB PDF (undated)
The DR-03 radios are 10m, the DR-06 is 6m, the DR-135LH is 40-45 MHz (non-USA). The "T" models are shipped with DTMF microphones. All radios covered by this manual except the DR-06T are wideband only. The DR-06T can run wide or narrow and also has an internal TNC.
|DR-135, DR-235 and DR-435 Service
Manual 5.3 MB PDF dated 2000
Single band mobiles, 2m, 220 and 440 MHz
|DR-135FX and DR-435FX Service Manual 2.1 MB PDF (undated)|
|DR-135T/E, DR-235T and DR-435T/E
Instruction Manual 680 KB PDF Copyright 2000
Single band 2m, 220 or 440 mobiles
|DR-235T Mark III Service Manual 1.6 MB PDF (undated)|
|DR-135T/E Mk III, DR-135FXE, DR435T/E Mk III, DR-435FXE Instruction Manual 1.23 MB PDF (undated)|
|DR-570: Instruction Manual 640 KB PDF Service Manual 2.6 MB PDF|
|DR-600 operators manual 260 KB PDF|
|DR-610 service manual 2.6 MB PDF|
|DR-620 service manual 6.9 MB PDF|
|DR-1200 Data Radio Instruction
Manual 175 KB PDF file
Service Manual 1.03 MB PDF
file Both are courtesy of David Leeper K6DWL
The user manual says that this radio is specifically designed for packet. Unfortunately the audio output pin on the mic jack is speaker audio (i.e. low impedance and it varies with the position of the volume control) so you have to be real careful with the level going into the TNC. If it had been line level out it would have been a lot better.
There is a little common info between the two manuals, so you will want to download both. The service manual has a full parts list but no schematic, only a block diagram and some rather poor board layouts. Does anyone have a real schematic?
|DM-1350 Power Supply complete schematic 36.7 KB PDF file|
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This page originally posted on 2009-Dec-04
Text, artistic layout and hand-coded HTML © Copyright 2004 and date of last update by Mike Morris WA6ILQ (callsign) /at/ repeater-builder /dot/ com
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.