[ICOM] IC-765 vs. IC-761

[Clif Holland]

And for whatever reason the high stability oscillator was stock in the 761 
and left out of the 765 ?????

Clif Holland, KA5IPF
www.avvid.com


----- Original Message ----- 
From: "Adam Farson" <farson at shaw.ca>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Sunday, August 22, 2004 12:49 PM
Subject: RE: [ICOM] IC-765 vs. IC-761


> Hi John,
>
> Here are some of the main differences, as I recall:
>
> Synthesiser: 761, PLL (similar to 751A). 765: DDS.
>
> CPU/memory: 761, similar to 751A but with firmware in ROM (if I am not
> mistaken). 765: completely new CPU with firmware in ROM and dynamic data 
> in
> battery-supported RAM. This allows tuning resolution to 1 Hz vs. 10 Hz on
> the IC-761.
>
> ATU: 761: basically an AT-150. 765: microprocessor-controlled high-speed 
> ATU
> with tuning-point memory in battery-supported RAM.
> IF and SSB filtering: 761, FL-80/FL-44A. IC-765: FL-30/FL-96. 761 has 
> PBT/IF
> Shift, stock 765 has IF Shift only.
>
> RF front end: 761, similar to 751A. 765: improved 1st mixer, preamp and RF
> baandpass filters for better strong-signal handling.
>
> Gary K8IZ or other list members who have serviced both radios may be able 
> to
> expand on this list.
>
> Cheers for now, 73,
> Adam VA7OJ/AB4OJ
>
>
>
>
> -----Original Message-----
> From: icom-bounces at mailman.qth.net
> [mailto:icom-bounces at mailman.qth.net]On Behalf Of John Geiger
> Sent: Sunday, August 22, 2004 10:22
> To: ICOM Reflector
> Subject: RE: [ICOM] New Pro III - Hold On Guys!
>
>
> Hi Adam,
>
> But weren't the 761 and 765 pretty close in circuit
> design?  It is interesting why one got a new number,
> whereas the other one got just a letter.  I would
> think that there would be a bigger difference going
> between the 751 and 751A than between the 761 and 765.
>
> 73s John NE0P
>
> --- Adam Farson <farson at shaw.ca> wrote:
>
>> Hi John,
>>
>> In terms of architecture, the 751 and 751A were
>> similar, but the 751A was a
>> complete revision in terms of circuit design. This
>> differs from the 761/765
>> case, where there were significant architectural
>> differences.
>>
>> Cheers for now, 73,
>> Adam VA7OJ/AB4OJ
>>
>>
>>
>>
>
>
>
>
>
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