Cellularblog240

On Dec 3, 2014 3:44 PM, 'briancoleman39@... [RadioDoctor]' <RadioDoctor@...> wrote:

I have downloaded the Radio Doctor software and installed it in my XP machine.
When I run the program and try to connect to the GM300 via the mike socket pins 4 and 7 I get the following problem.
when I go to read codeplug the data light blinks once and then the message NO CONNECTION comes up.
What have I not done, or, what have I yet to do to overcome this problem.
Thanks,
Brian

Will have to check my diagram if I get time but I'm sure a resistor was needed between two pins on the rj45 (or was that a Jedi thing??).

On 4 Dec 2014, at 0:44, 'briancoleman39@... [RadioDoctor]' <RadioDoctor@...> wrote:

I have downloaded the Radio Doctor software and installed it in my XP machine.
When I run the program and try to connect to the GM300 via the mike socket pins 4 and 7 I get the following problem.
when I go to read codeplug the data light blinks once and then the message NO CONNECTION comes up.
What have I not done, or, what have I yet to do to overcome this problem.
Thanks,
Brian

http://www.batlabs.com/gm300.html has a lot of good information on the
M120/GM300. http://www.batlabs.com/images/gm300mic.gif is good for info on
the mic socket and its comparativeness to the rear accy plug.
http://www.batlabs.com/images/maxpin.gif is the diagram I went off when
building my programming lead for my Radius rigs and it's worked great across
the range (including Warris GM339 etc). I can't remember if it was this
thread or another asking about the radius lead that I replied to earlier on
the iPhone.
I agree that the RIB is the best way to go, I have both cables (the multi
ribless thing and a RIB) and whilst my RIB is an after-market I found it a
little more reliable than multi ribless. Since I needed the rib for my Jedis
(MCS2000) and that's what I'd already purchased it for I found it quicker,
cheaper and easier to go down the street to the electronics store, purchase
a few RJ45s, a DB25 and shell and 1m of 8core flatstrap (MUCH easier to
crimp and play with when it doesn't need twists). I have the RJ crimping
pliers for my computer work so all sweet, professionally made cable with any
odd jumpers and resistors stored in the DB25 shell out of sight and touch.
I've used the same parts and technique now for the Jedi lead and
Radius/Warris lead with great success (have to name them in permanent marker
since they look the exact same lol). Once you have the RIB and PC2RIB cable
you are 3/4 there for most Moto radios :) so a wise investment if you want
to play with Motorola.
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-----Original Message-----
From: RadioDoctor@yahoogroups.com [mailto:RadioDoctor@yahoogroups.com]
Sent: Thursday, 4 December 2014 7:32 AM
To: RadioDoctor@yahoogroups.com
Subject: Re: [RadioDoctor] Motorola GM300 programming with Radio Doctor ?
At 11:33 PM 12/02/2014, you wrote:
>I have downloaded the Radio Doctor software and installed it in my XP
machine.
>When I run the program and try to connect to the GM300 via the mike

socket pins 4 and 7 I get the following problem.

>when I go to read codeplug the data light blinks once and then the

message NO CONNECTION comes up.

>What have I not done, or, what have I yet to do to overcome this problem.
>Thanks,
>Brian
Brian, I don't know you background so if you know some of what I've written
below please don't take it as insulting or talking down to you.
Are you set to the correct COM port ? Look at the Device Manager screen
under Ports and see which COM port is actually in your computer.
Then set RD to that port.
Are you using the correct cable?
You have to use a made-for-the-situation cable. I hope you DON'T expect a
cable plugged into the ethernet jack on a computer on one end and plugged
into the mic jack on the radio to work (don't
laugh, I've seen it. You see a lot of stupid customers in the 2-way
business)
For one thing, the pin numbering has pin 1 of the radio at the top.
The common RJ45 network cable pin numbering is backwards from Motorola.
Second of all, the radio is NOT made to handle RS-232 voltages.
Motorola has a special interface box (called a RIB - Radio Interface
Box) that goes inbetween the computer and the radio-specific cable.
If you want the history of programmable radios, and in great detail, go
here:
<http://www.repeater-builder.com/motorola/rss/rss-index.html>
Now the Radio Doctor software is unique - it was written by someone outside
Motorola, and specifically for Windows.
It can handle USB based serial ports where RSS is limited to COM 1 or COM 2.
So the RSS problems concerning a slow computer and only COM 1 or 2 mentioned
in the articles above do not apply.
But you still need one of these two setups:
1) A RIB and a radio-specific cable (DB25 to Maxtrac/Radius/GM300)
2) A serial cable that plugs into the radio, and has the RIB components in
the connector shell. Something like ebay item 160363972038. If I'm going
to buy a cable I use kawamall - the people in our local group have had very
good luck with them. Not 100%, but close.
Not that Radio Doctor will work with a USB-based cable, and Moto RSS will
not. If you plan on ever using real Moto RSS with that cable (i.e. sometime
in the future) then DO
NOT get a USB cable. RSS runs under DOS and DOS
has no concept of USB.
Personally, I prefer a RIB-based setup as I have a real Moto RIB, and the
non-kawamall ribless cables are inconsistent - this first showed up with a
friend that has 8 or 9 GM300s and a few Maxtracs in his extended family - a
couple for Civil Air Patrol (low end of VHF), several more for ham radio
(6m, 2m and UHF), all of the UHF ones include the GMRS channels, another is
the dispatch base at the business, and a few more are
bolted into the business trucks. The chinese ribless
cable he purchased would program some radios but
not others. My real RIB and cable did every one,
every time, and with his computer.
Mike
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Posted by: M M <wa6ilq@outlook.com>
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New list members should review the FILES section of the group or read the
archives prior to asking where they can get this software.
<<http://groups.yahoo.com/group/RadioDoctor/files>>
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