Most radios you just push the tune button quickly and that will turn it off.
I'm not familiar with that radio but I'd think that's how it is.
----- Original Message -----
From: "T Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, December 23, 2007 2:28 PM
Subject: Re: possible problem with output power on IC746
> Lou:
>
> I don't have a dummy load here, but am planning to order one of the
> 300-watt
> dry dummy loads from MFJ whenever I get the bucks.
>
> In the meantime, I'm going to see what I can do to totally take the
> automatic antenna tuner out of the circuit, and see what happens.
>
> I'll probably have to go into some menu setting to accomplish that.
>
> I sure hope it's nothing wrong with the 746, but at least if it is, I have
> the TS480 now to use.
>
> 73 from Tom Behler: KB8TYJ
>
> ----- Original Message -----
> From: "Lou Kline" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Sunday, December 23, 2007 2:15 PM
> Subject: Re: possible problem with output power on IC746
>
>
>> Hi.
>>
>> It would be interesting to see if the radio shows the same behavior when
>> going into the dummy load with the auto tuner switched out. I've noticed
>> a
>> phenomenon, which I don't quite understand, where putting an auto tuner
>> in
>> line will sometimes cause a radio to roll back the power even when the
>> SWR
>> looks good. And, on my Kenwood TS690S, on 10 meters, it rolls the power
>> back even on a good load UNLESS I switch the auto tuner in! There sure
>> seems to be some goofy things that go on that the instrumentation doesn't
>> always reveal.
>>
>> 73, de Lou K2LKK
>>
>>
>>
>> At 01:16 PM 12/23/2007 -0500, you wrote:
>>>Key the mic on CW as well, it will work. that seems strange though if it
>>>showed high power before. Hopefully there's nothing going wrong. If you
>>>have
>>>the tuner in the radio on, turn that off and see if that changes things.
>>>I
>>>haven't checked on the TS-2000 yet but I know my 570, the tuner can cut
>>>the
>>>power back a bit. Not that much, but it's something to check anyway.
>>>----- Original Message -----
>>>From: "T Behler" <[log in to unmask]>
>>>To: <[log in to unmask]>
>>>Sent: Sunday, December 23, 2007 1:12 PM
>>>Subject: possible problem with output power on IC746
>>>
>>>
>>> > Hello all.
>>> >
>>> > I've developed a strange problem with my Icom 746 transceiver, that I
>>> > could
>>> > use some help with.
>>> >
>>> > I have noticed that, when using my talking SWR meter unit, I only seem
>>> > to
>>> > get about 60% output power with an antenna that is resonant on 3.7 MHZ
>>> > and
>>> > which has a 1.1 to 1 SWR reading.
>>> >
>>> > Thinking that something might be wrong with my talking SWR meter, I
>>> > had
>>> > my
>>> > sighted XYL help me do some checking without the talking SWR meter,
>>> > using
>>> > the meter on the front of the radio.
>>> >
>>> > She helped me check the output power meter on the IC746 itself by
>>> > completely disconnecting the talking SWR meter, and then doing the
>>> > test.
>>> >
>>> > She tells me that, on the bottom scale of the meter, the SWR reading
>>> > for
>>> > my
>>> > resonant 80-meter dipole is indeed 1.1 to 1, which is just what I'd
>>> > expect
>>> > it to be. However, the power output percentage is only around 60%
>>> > when
>>> > the
>>> > RF
>>> > power knob is turned all the way to the right.
>>> >
>>> > I'm doing these tests in both CW and RTTY modes.
>>> >
>>> > When I do the test in RTTY mode, I simply use the PTT on the mic.
>>> > When
>>> > doing the test in CW mode, I simply have my paddles send a series of
>>> > "dahs".
>>> >
>>> > Could I have something set wrong with the 746, or is there something
>>> > wrong
>>> > with the rig itself?
>>> >
>>> > Is there something else I should try?
>>> >
>>> > I think I'll go play with my new TS480 now. (grin)
>>> >
>>> > 73 from Tom Behler: KB8TYJ
>>> >
>>>
>>>
>>>
>>>
>>>--
>>>No virus found in this incoming message.
>>>Checked by AVG Free Edition.
>>>Version: 7.5.516 / Virus Database: 269.17.7/1194 - Release Date:
>>>12/23/2007 5:27 PM
>>
>> Louis Kim Kline
>> A.R.S. K2LKK
>> Home e-mail: [log in to unmask]
>> Work e-mail: [log in to unmask]
>> Work Telephone: (585) 697-5740
>>
>>
>
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