GP300 programming cable

[n9ysu]

When constructing a GP300 programming cable, where would you wire the clip for the 9v battery connection? Do you wire it to the clip end, or the DB25 connector end? Is there anything else special that needs to be done to it?

[jim]

Either end will be fine although I would prefer the radio end of the DB25 cable.

[Monty]

Hi:

If you are making a Clone GP300 cable, is it
VERY important that the contact pin to the
programming surface be mated together properly. I have seen some use " Nip Clips"
only to have the wire slip off after hitting
F8. If that should happen, you will turn your radio into a Brick Real Quick.

What I do is either use the Factory Program
fixture, or use a Old battery Housing with
a good Spring Loaded Pin for the Porgram Contact. Then mount a 9 Volt battery holder
on the back of the housing ang run the
cable to the bottom of the Old Battery Housing....When the Housing is slipped onto
the back of the radio, it provides a Positive
Contact not only for the battery, but the program pin as well.

I have some Factory originals if you plan to
do alot of programminmg, or I do make suitable ( and fully tested Clones ) if you
do not wish to bother making one.

I have seen many a dead radio result from
the " nip clip" and wires held on by rubber
bands. I can sometimes restore a dead GP300
for 125.00.

Just make sure all contacts are free of debrie, and you have a good power source.

Its also not a bad idea to have a stable
programming computer platform too...

Monty

[n9ysu]

How much for a clone? (regular programming, not cloning)

[HumHead]

I would have to aggree wholeheartedly with Monty's warnings about "nip clip" cables.

If you want to check out an interesting alternative (even if only for the design of the radio adapter), check out:

http://www.qsl.net/eb4eqa/gp300_rib/gp300_rib.htm

[Monty]

HI:

Email me direct @ [email protected]
and I can give you some photos of the
Factory Original, and the Clone information.

Monty