Well, Bob, that might work, but I do understand your reason for caution.

Will see what I can work out here this week-end.

It may just be easier in the long run to manually put the external tuner in 
line when needed;  that way, I maintain control of the situation, and the 
potential for confusion is minimized.

73 from Tom behler:  KB8TYJ

----- Original Message ----- 
From: "Bob J." <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, October 04, 2008 2:22 PM
Subject: Re: using TW1 correctly with TW1


> Tom,
>
> How about this:
>
> Connect the TS-480SAT's first pigtail to the TW1's "radio" connector 
> using
> one jumper.
> Connect the TW1's "antenna" connector  to the external tuner's "radio"
> connector  using one jumper.
> Connect the external tuner's "antenna" connector to one of the selectable
> connectors on a CoAx switch using one jumper.
>
> Connect the TS-480SAT's second pigtail to another one of the selectable
> connectors on a CoAx switch using one jumper.
>
> Connect the antenna feed line to the "common" connector on the CoAx 
> switch.
>
> Then, whenever you want to change from using the external tuner to using 
> the
> internal tuner, you manually switch the CoAx switch and make the TS-480SAT
> select the appropriate pigtail.  You also need to make the TS-480SAT 
> select
> or deselect the internal tuner as appropriate.
>
> Caution:  Don't confuse which way the CoAx switch is set whenever
> transmitting!
>
> btw, I told you it would be messy. ;)
>
> hth
>
> Bob   KD8IXD
>
>
>
> ----- Original Message ----- 
> From: "T Behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, October 03, 2008 6:56 PM
> Subject: Re: using TW1 correctly with TW1
>
>
>    Yeah, I guess you're right, Bob.
>
> You know what, though?
>
> I just thought of something, which I'd like some more feedback on from 
> other
> TS480 users out there:
>
> I wonder if I could use one of the antenna ports on the TS480 for the
> auto-tuner, and the other for the outboard tuner?
>
> That would mean the only thing I'd have to do is physically switch
> connections between the two pigtails, depending on whether I'm using the
> internal auto-tuner, or my outboard MFJ external tuner?
>
> If this is incorrect, please don't laugh at me, guys. ... It's getting 
> late,
> and the mind is going fast here.
>
> 73 from Tom Behler:  KB8TYJ
>
> ----- Original Message ----- 
> From: "Bob J." <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Saturday, October 04, 2008 12:29 AM
> Subject: Re: using TW1 correctly with TW1
>
>
>> Tom,
>>
>> You made two important observations:
>>
>> 1. "...the MFJ 901B that I have has no bby-pass on it..."
>>
>> therefore
>>
>> 2. "...if I use the auto-tuner in the TS480, I'd have to disconnect the
>> outboard tuner..."
>>
>> Think about it:  If your external tuner has no bypass capability, how
>> could
>> the
>>
>> "...circuit for the out-board tuner is somehow bypassed in the TS480 when
>> using the internal auto-tuner."
>>
>> I can imagine a way to rig up an external bypass by using several jumpers
>> and a couple of CoAx switches but I suspect that would introduce
>> unnecessary
>> losses not to mention being pretty messy.
>>
>> hth
>>
>> Bob   KD8IXD
>>
>>
>> ----- Original Message ----- 
>> From: "T Behler" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Friday, October 03, 2008 4:16 PM
>> Subject: Re: using TW1 correctly with TW1
>>
>>
>>    John:
>>
>> I need to be sure I'm understanding you correctly here:
>>
>> When using the external tuner, are you saying you go from radio, to TW1,
>> to
>> tuner, to antenna?
>>
>> I would have thought it'd be the other way around:
>>
>> from radio, to tuner, to TW1, to antenna.
>>
>> Help me out with an explanation.
>>
>> Also, the MFJ 901B that I have has no bby-pass on it, so I'm assuming 
>> then
>> that if I use the auto-tuner in the TS480, I'd have to disconnect the
>> outboard tuner, unless the circuit for the out-board tuner is somehow
>> bypassed in the TS480 when using the internal auto-tuner.
>>
>> Anyone else with thoughts on these issues?
>>
>> 73 from Tom behler:  KB8TYJ
>>
>>
>> I would have thought you
>> ----- Original Message ----- 
>> From: "John Miller" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Friday, October 03, 2008 7:51 AM
>> Subject: Re: using TW1 correctly with TW1
>>
>>
>>> put the meter between the tuner and the radio. Bypass the radio tuner to
>>> use
>>> the external one, and if you use the internal one in the radio, you have
>>> to
>>> either put the external tuner in the bypass position if it's like mine
>>> and
>>> has one, or disconnect it. Most tuners have a way to bypass it though, I
>>> know my MFJ 941C does.
>>> ----- Original Message ----- 
>>> From: "T Behler" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Friday, October 03, 2008 6:53 AM
>>> Subject: using TW1 correctly with TW1
>>>
>>>
>>>> Hi, again, folks.
>>>>
>>>> Just a few more questions here, this time when using the TW1 with the
>>>> TS480
>>>> and an outboard tuner:
>>>>
>>>> The out-board tuner I have is one of the older MFJ 901B versatuners.
>>>>
>>>> 1.  I assume that you connect the outboard tuner to the rig, and then 
>>>> go
>>>> from the tuner to the TW1.  Is that correct?
>>>>
>>>> 2.  When using the outboard tuner, I would assume you'd want to be very
>>>> sure
>>>> to turn off the auto-tuner in the TS480, correct?
>>>>
>>>> and
>>>>
>>>> 3.  When using the auto-tuner in the Ts480, would I have to disconnect
>>>> the
>>>> outboard tuner, or is that automatically bypassed when I switch the
>>>> TS480's
>>>> internal auto-tuner on?
>>>>
>>>> Thanks as always, guys;  I appreciate your patience with all of my
>>>> questions.
>>>>
>>>> 73 from Tom Behler:  KB8TYJ
>>>
>>
>