[ICOM] ICOM 746 PRO

[Mel Martin]

Maybe. It depends on whether the impedance is reactive or not. Icom's 
SWR circuitry reacts strongly to some reactive loads... even on HF it 
can be touchy. The two 746s I've had access to would cut back power very 
quickly into moderate SWR. I would notice it if I tried to use my 
horizontal beam cut for the low end of 2M on FM or if ice or snow 
detunes the antenna. I also notice that the SWR folds back power when I 
use my TE Systems amp. As it requires about 60W of drive it is 
serendipitous as it prevents inadvertently overdriving it ;-)

The suggestion to adjust the cable length a little is a good one as it 
will change the reactive component component of the load. Also, if you 
are seeing a 1.3:1 SWR at the end of a cable run, your antenna SWR is 
higher... you might want to adjust the antenna.

If your rig puts out full power into a 50 ohm load, I wouldn't worry 
about it.
>
> No...................................................Don C.
>
>
> ----- Original Message ----- 
> From: <n6eq at juno.com>
> To: <icom at mailman.qth.net>
> Sent: Monday, January 07, 2008 5:19 AM
> Subject: [ICOM] ICOM 746 PRO
>
>
>   
>> Hello,
>> I just bought a new Icom 746 Pro... The problem I'm having is with a
>> 1.3.1 swr the output on 2 meters is only 65 watts. Is this normal for the
>> swr fold back to reduce rf output by 35% ? Tnx in advance.
>>
>> 7 3 de N6EQ
>> Chuck
>> ----
>> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
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>>     
>
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