[600MRG] IC-735

[William E. Isakson]

I agree with that John, you do have to watch out.  when I was using the
MARS mod on the 735 much of the actual output was inside the broadcast
band--that is in the harmonics.  It is very important to put a low pass
filter before the antenna.
Bill

--------


Bill Isakson     AC6QV
Roseburg, Oregon USA
bill.isakson at gmail.com



On Thu, Jan 25, 2018 at 8:58 AM, Kenneth G. Gordon <kgordon2006 at frontier.com
> wrote:

> On 25 Jan 2018 at 10:27, John Langridge wrote:
>
> > >With some fairly easily "do-able" mods, yes. It will output 100 watts
> on 630 meters and about 5
> > watts on 2200 meters.
> >
> > see my comments on an important practical aspect of using modified rigs
> here:  http://
> > njdtechnologies.net/beware-of-modifying-amateur-rigs-on-472-
> khz-or-137-khz/
> >
> > If you are making 100w on 630m with an IC735 thats likely something on
> the order of 99.5 watts
> > of harmonic content and 0.5w at 472...
>
> Correct.
>
> Jacek addresses that issue, and that is one reason he insists that one
> must modify the BP
> filters. His PDF goes into some detail on the harmonics problem and how to
> correct, or at
> least, minimize it.
>
> He also says that if one REALLY wishes to use the IC-735 on 2200 meters,
> one MUST
> modify the BP filters accordingly, or use an external filter, which he
> describes.
>
> Ken W7EKB
>
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