[Icom] ICOM 756 PRO2 - NO RX

[Tony Hwang]

Hi,
How about the navigation radar?
Peak power on radar is quite high.
73,
Tony, VE6CGX

David J. Ring, Jr. wrote:

>Several weeks ago I asked for some help for a friend who had an IC-756PRO2
>that didn't work.  I got several replies from some that suggested various
>things to check.
>
>The radio would only respond to VERY loud broadcast stations.  (Actually
>WWVH when he was in Hawaii...)
>
>I got a message back from the man on the ship:
>
>----- Original Message -----
>Sent: Friday, August 08, 2003 12:27 PM
>Subject: Personal: Icom Completed ....
>
>
>Guys,
>just got an e-mail back from Icom:
>
>Quote
>
>Jim
>   The front end of your radio received a very strong RF overload.  Had to
>replace several components at the Controller and RF units.  Please eliminate
>this RF source before using the radio again.
>
>   We are ready to return ship the radio.  Please contact
>xxxxxxxxxxxxxxxxxxxxx with the address you want it returned to.  Tag#
>xxxxxx.
>
>Dan Miles
>Icom America
>Service Supervisor
>
>Unquote
>
>
>Dave,
>what do you think ? Highest power rig on the ship is a RAY-152 HF tranceiver
>that runs Globe E-mail system, don't think it's more than 150W, any info
>available on this problem in the field. By the way we have at least 2 other
>HF receievers running all the time, a Furuno HF tranceiver and the DSC watch
>receiver both of which must be picking up about the same amount of rf. Can't
>put a filter in the front end since the problem emitter is in the 2-30 Mhz
>range.
>
>So, anything you can come up with will be appreciated.
>
>73's
>Jim
>=======================================
>
>Any suggestions?
>
>I told him to look and see what his dipole "sees" RF wise.
>
>In addition to what Jim says above, the ship has X band and S band radars -
>20 to 50 kW peak pulse (small duration) probably is what I remember from my
>shipping days.   Is that what's blowing the RF front end?  They also have a
>very low frequency depth sounder, and several satellite transcievers, and a
>20 watt VHF radio.
>
>DSC in the above means "digital selective calling".
>
>Any help would be appreciated.
>
>73
>
>David Ring, N1EA
>
>
>----
>Your Moderator: Dick Flanagan W6OLD, icom-owner@mailman.qth.net
>Icom Users Net: Sundays, 1700Z, 14.315 MHz
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>
>  
>