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Subject:
From:
John Miller <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Mon, 24 Dec 2007 17:49:54 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (193 lines)
No, the external meter will show what's actually going on as for SWR so if 
that's showing 1:1, I'd say there's no problem there. Cable between the 
external meter and radio, possibly but even that might be a stretch, 
something to check though definitely.
----- Original Message ----- 
From: "Colin McDonald" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, December 24, 2007 5:02 PM
Subject: Re: possible problem with output power on IC746


> would the meter still show a 1 to 1 swr with this miss match of impedance?
> Also, the meter on the radio itself is showing the same low output, and it
> shouldn't be effected by impedance  or swr problems if its designed right.
>
> 73
> Colin, V A6BKX
> ----- Original Message ----- 
> From: "Lou Kline" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, December 24, 2007 12:28 PM
> Subject: Re: possible problem with output power on IC746
>
>
>> Hi.
>>
>> One thing that may be worth considering with the internal antenna
>> tuners.  Meters such as the TW1 are designed to measure power on a 50 ohm
>> load.  Your power out indication may or may not be accurate if the
>> impedance on the antenna side of the tuner is considerably different than
>> 50 ohms.  I've seen this happen many times in the past where a meter 
>> won't
>> read accurately because the impedance is really 150 ohms or so.  I don't
>> know if that is happening in your situation, but it is another 
>> possibility
>> to consider.
>>
>> 73, de Lou K2LKK
>>
>>
>> At 12:10 PM 12/24/2007 -0500, you wrote:
>> >I agree with you, especially now that I see the difference for myself on
> the
>> >TW-1. I never was a huge fan of internal tuners because of the narrow
> tuning
>> >range and I knew they dropped power but after comparing and being able 
>> >to
>> >watch the results for myself, I'd say no more internal tuners for me
> unless
>> >I really need it, like field day setup and stuff since I think my 570 
>> >may
>> >end up doing that this coming year.
>> >----- Original Message -----
>> >From: "Anthony Vece" <[log in to unmask]>
>> >To: <[log in to unmask]>
>> >Sent: Monday, December 24, 2007 12:01 PM
>> >Subject: Re: possible problem with output power on IC746
>> >
>> >
>> > > Hi Tom;
>> > >
>> > > It can't hurt to do the full reset.
>> > >
>> > > I was going to suggest an external tuner.
>> > >
>> > > If I ever get back into hf again an external tuner is the only way to
> go.
>> > >
>> > > 73 De Anthony W2AJV
>> > > [log in to unmask]
>> > > ECHOLINK NODE NUMBER: 74389
>> > >
>> > > ----- Original Message -----
>> > > From: "T Behler" <[log in to unmask]>
>> > > To: <[log in to unmask]>
>> > > Sent: Monday, December 24, 2007 10:16 AM
>> > > Subject: Re: possible problem with output power on IC746
>> > >
>> > >
>> > >>    Anthony:
>> > >>
>> > >> Do you have any suggestions of what I might try with my 746?
>> > >>
>> > >> I have now tested it on two resonant antennas--my 80-meter dipole,
> and my
>> > >> tribander yagi on 20 meters, and with a 1.1 to 1 SWR reading, I 
>> > >> still
> get
>> > >> only approximately 50 watts out, whether the auto-tuner is on or 
>> > >> off.
>> > >>
>> > >> I may have to send the rig in for servicing, but obviously want to
> avoid
>> > >> that if I can.
>> > >>
>> > >> I even thought of doing a full re-set of the CPU, but hate to risk
>> > >> loosing
>> > >> all the stuff I have in memories, if it wouldn't work in the end.
>> > >>
>> > >> 73 from Tom Behler:  KB8TYJ
>> > >>
>> > >> ----- Original Message -----
>> > >> From: "Anthony Vece" <[log in to unmask]>
>> > >> To: <[log in to unmask]>
>> > >> Sent: Monday, December 24, 2007 9:40 AM
>> > >> Subject: Re: possible problem with output power on IC746
>> > >>
>> > >>
>> > >>> Hi Everyone;
>> > >>>
>> > >>> I used the 746 and the 2000 and never had a problem however, the 
>> > >>> 480
>> > >>> just
>> > >>> didn't fit the bill.
>> > >>>
>> > >>> It just doesn't have that Kenwood footprint.
>> > >>>
>> > >>> Merry Christmas
>> > >>>
>> > >>> 73 De Anthony W2AJV
>> > >>> [log in to unmask]
>> > >>> ECHOLINK NODE NUMBER: 74389
>> > >>>
>> > >>> ----- Original Message -----
>> > >>> From: "John Miller" <[log in to unmask]>
>> > >>> To: <[log in to unmask]>
>> > >>> Sent: Sunday, December 23, 2007 6:17 PM
>> > >>> Subject: Re: possible problem with output power on IC746
>> > >>>
>> > >>>
>> > >>>> From what someone else said, and what I've observed here, it seems
> to
>> > >>>> be
>> > >>>> mostly internal tuners. I don't notice any noticeable drop through
> my
>> > >>>> external LDG tuner on my IC-706, or my LDG tuner hooked up to the
> G5RV,
>> > >>>> weather it be on my TS-2000 or TS-570. From the numbers, I'd say
> the
>> > >>>> TS-520's not losing anything either so I think it's mostly the
> internal
>> > >>>> tuners. If someone else has noticed anything else, I'd be curious.
>> > >>>> ----- Original Message -----
>> > >>>> From: "Walt" <[log in to unmask]>
>> > >>>> To: <[log in to unmask]>
>> > >>>> Sent: Sunday, December 23, 2007 6:08 PM
>> > >>>> Subject: Re: possible problem with output power on IC746
>> > >>>>
>> > >>>>
>> > >>>>> Hi Guys,
>> > >>>>> Is it only internal, auto tuners or all auto tuners that give the
>> > >>>>> reduction
>> > >>>>> in power?
>> > >>>>>
>> > >>>>> Walt
>> > >>>>> WA4QXT
>> > >>>>> New London CT
>> > >>>>> [log in to unmask]
>> > >>>>>
>> > >>>>
>> > >>>>
>> > >>>
>> > >>>
>> > >>
>> > >>
>> > >
>> >
>> >
>> >
>> >
>> >--
>> >No virus found in this incoming message.
>> >Checked by AVG Free Edition.
>> >Version: 7.5.516 / Virus Database: 269.17.8/1195 - Release Date:
>> >12/24/2007 11:19 AM
>>
>> 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
>>
>>
>>
>> -- 
>> No virus found in this incoming message.
>> Checked by AVG Free Edition.
>> Version: 7.5.516 / Virus Database: 269.17.8/1195 - Release Date:
> 12/24/2007 11:19 AM
>>
>>
> 

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