[UK-CONTEST] ICOM 756 pro III front-end

[Clive Whelan]

Well not on either of mine there isn't!

Frying sounds unlikely. More likely in my experience is selecting the 
wrong antenna- topmost button to the left of the screen. This is easily 
done in the heat of the battle and doesn't leap off the display at you. 
Can be checked visually in no time. I hope I'm right.

More seriously keying of a legacy amplifier such as the SB220, without 
an intermediate relay or solid state switch,  will fry the PRO3 antenna 
c/o relay. This is verrry poor design I have to say.


73


Clive
GW3NJW

Mark Marsden wrote:
> Hi Marios
>
> I had a similar problem at the start of operations at GB200T. There are
> two coax links on the back that must be made to connect the antennas to
> the receivers. I hope you didn't get caught out by this simple omission?
>
> 73, Mark G4AXX
>
>
> -----Original Message-----
> From: uk-contest-bounces at contesting.com
> [mailto:uk-contest-bounces at contesting.com] On Behalf Of Marios Nicolaou
> Sent: 08 December 2008 14:53
> To: uk-contest at contesting.com
> Subject: [UK-CONTEST] ICOM 756 pro III front-end
>
> Hi all,
>
> in an attempt to try something new for contesting, I invested in a 756
> pro
> III. I spent a week preparing for CQWW CW for an SO2R entry only to find
> out
> at 00:00Z (start) that my 756 pro III was deaf. Arhhhhh! I never
> transmitted
> on the same band and had BPF throughout and was not running excessive
> power
> but I believe that the front-end was somehow fried.
>
> I had a similar problem with my 1000MP at WRTC and managed to repair it
> by
> changing an SMD diode (info on my website). Is there an equivalent one
> for
> the 756 pro III (now out of warranty)?  Does anyone have a technical
> manual?  I couldnt find anything obvious from  "Dr google".
>
> Many thanks in advance
>
>