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Subject:
Re: External tuner vs internal tuner?
From:
Gerry Leary <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Sat, 21 Jul 2012 00:20:46 -0600
Content-Type:
text/plain
Parts/Attachments:
text/plain (62 lines) 
Most of the internal tuners are in the transmit only.
----- Original Message ----- 
From: "Colleen Roth" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, July 20, 2012 12:40 PM
Subject: Re: External tuner vs internal tuner?


> Hi,
> We went to an External Tuner because we could get a better match.
> Our receive also improved.
> We have an Icom706. I do not remember which one. I think it is the last 
> way they made.
> Colleen, N8TNV;
>
>
>
> ----- Original Message -----
> From: Steve <[log in to unmask]>
> To:  [log in to unmask]
> Date: Friday, Jul 20, 2012 02:02:42 PM
> Subject: Re: External tuner vs internal tuner?
>
>>
>>
>> Jim,
>>
>> Typically, the internal tuner won't match much more than a 3:1 or maybe 
>> at
>> the outside 6:1 SWR, the older internal tuners on the TS-850 would match
>> 10:1.  Now, some of that might depend on your reactances, but since they
>> have small caps, they don't have the capabilities of external tuners.
>>
>> Then, let's say you have a couple different scenarios.  First, let's say 
>> you
>> want to be real efficient and feed your wire antenna with open-wire.  You
>> could try running it through a balun, but it would probably be easier to
>> have an external tuner with the balanced feed point on it.
>>
>> The second scenario: you want to run a linear amp.  You'll then 
>> definitely
>> need an external tuner.
>>
>>
>> ----- Original Message ----- 
>> From: Jim Gammon
>> To: [log in to unmask]
>> Sent: Thursday, July 19, 2012 1:10 PM
>> Subject: External tuner vs internal tuner?
>>
>>
>> Steve, what advantage is there to using an external auto tuner
>> over the internal tuner in the TS-480? I have the 100 w model and
>> really think it's a great rig.  That question about the tuner has
>> nagged at me though.  I have been wondering if it would be
>> worthwhile to get something like an MFJ external tuner, or is
>> that simply redundant because of the existing internal one.  I
>> have occasionally used the rig running low power when I had
>> terrible SWR and still worked stations.  Jim WA6EKS
>
>

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