[ICOM] IC735 Users

[Jim Hargrave]

Mac,

Please explain "definitely."

I am the proud user of my IC-735 since 1986 and have never experienced any
PLL or known frequency problem.  I have only had the cover off twice. Once
for battery replacement and the other time to change the CI-V jumper to 9600
baud. Its very rugged and has been in mobile service most of the time.

It just keeps on playing and playing and playing.

   * 73's Jim W5IFP *


   >-----Original Message-----
   >From: icom-bounces at mailman.qth.net
   >[mailto:icom-bounces at mailman.qth.net]On Behalf Of D C *Mac* Macdonald
   >Sent: Tuesday, June 10, 2008 11:12 AM
   >To: ICOM Reflector
   >Subject: RE: [ICOM] IC735 Users
   >
   >
   >
   >The IC-735 is definitely one of the radios
   >that had/have the problem with the variable
   >capacitors in the PLL system!
   >
   >73 - Mac, K2GKK/5
   >Oklahoma City,OK
   >
   >
   >
   >
   >> From: mike-2007 at elp.rr.com
   >> To: icom at mailman.qth.net
   >> Subject: RE: [ICOM] IC735 Users
   >> Date: Tue, 10 Jun 2008 04:58:31 -0600
   >>
   >>
   >>> -----Original Message-----
   >>> From: icom-bounces at mailman.qth.net
   >>> [mailto:icom-bounces at mailman.qth.net] On Behalf Of Dave Shirk
   >>> Sent: Tuesday, June 10, 2008 12:11 AM
   >>> To: ICOM Reflector
   >>> Subject: [ICOM] IC735 Users
   >>>
   >>> Hello folks,
   >>>
   >>> I still have some issues that I would like to address. I will
   >>> list them as separate items below:
   >>>
   >>> 1 - The readout frequency is about 110Hz too high. Will a
   >>> simple adjustment of the 1st local oscillator take care of
   >>> this, or is it more complex?
   >>
   >> I would go through the PLL alignment. IIRC - it isn't hard to
   >do. I do not
   >> remember if the 735 had the CAP PROBLEM in the PLL. Find out,
   >and since you are
   >> in it for alignment - replace the caps - IF THE 735 is one of
   >the affected
   >> units. I sold my service manual with my 735 - and I don't
   >remember anymore.
   >>
   >>> 2 - The receiver seems very sensitive to overload. It has
   >>> been so long since I have used this rig, I do not know if it
   >>> is the normal behavior for the 735. It seems once a signal
   >>> gets over S9, the signal starts to distort. Any comments?
   >>
   >> The noise blanker was a big problem there - is the noise
   >blanker on? Try it
   >> off. Try it with the pre-amp off too.
   >>
   >>> 3 - It looks like I am getting close to tuner encoder
   >>> problems. It basically works well, but sometimes acts odd.
   >>> Could this be a cleaning issue?
   >>
   >> Try gently blowing it out with a can of compressed air. If
   >that don't get it,
   >> try using a Q-tip dipped in alcohol to gently wipe the LEDs
   >and photo-resistors.
   >> If that doesn't work, send it to Scott Malcolm. CAUTION -
   >those encoders are
   >> UNOBTAINIUM! Don't screw it up - or your rig becomes a
   >computer-controlled
   >> radio. Other choice is to buy a dead radio to gut the encoder
   >from. But if
   >> cleaning don't get it, E-mail Scott Malcolm for help.
mailto:mts at trip.net.
>
> Good luck.
>
>
> Mike - KD9KC.
> El Paso, Tx.
> DM61rt
----
Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
Icom Users Net: Sundays, 1700Z, 14.316 MHz
Icom FAQ: http://www.qsl.net/icom/
No virus found in this incoming message.
Checked by AVG.
Version: 8.0.100 / Virus Database: 270.1.0/1492 - Release Date: 6/9/2008
10:29 AM