[Icom] MARS xmt for 756ProII

Sun, 28 Jul 2002 20:30:58 -0500

If you send Icom a copy of your MARS license, they will send you the mod =
- If they do it for you they charge you 1/2 hr labor ($37.50) plus shippi=
ng but it will still be covered by the warranty - ( think they probably w=
ould still warrant the radio if you didn't mess it up doing the mod.) I h=
ave had them fax me mods befroe and they were hard to read, but they will=
 mail you the mod if you want. Good Luck
George
W4LT

----- Original Message -----
From: Dean Norris
Sent: Sunday, July 28, 2002 7:01 PM
To: [email protected]
Subject: Re: [Icom] MARS xmt for 756ProII

At 13:45 7/28/2002, you wrote:
>Thanks, reasonable suggestion but this is a fixed voltage RS-35M and I
>doublechecked the voltage with my DMM, shows a good 13.8v.
>
>I looked at the 756ProII Service manual (I got it along with the
>756ProII) and it shows the third diode (D3753) as a diode added on USA
>rigs. This diode was to be removed on the 756Pro but nothing was said
>about removing it on the ProII. However D3751, which is identified as to
>be removed on both the Pro and ProII, is also marked as added on USA
>models. So I'm wondering if D3753 should be removed as well since it was
>removed on the 756Pro, and they seem to be the same in that area.
>Confusing......
>
>73, Ray  W2EC

I did the mod yesterday.  I notice some drop off in the 5-6 mHz range,
especially noticeable at 5.9 or so.  I only removed the 2 diodes and see
none of the other problems you note.

Sounds like a hiccup somewhere.  Solder bridges?

unkadean

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