Tom,
Think of it this way: The TW-1 meter is looking down the coax towards the
antenna. It needs to see the tuner first so it can watch you jiggle and
turn the knobs as the match is changed. If you put the meter after the
tuner and your antenna swr is 3:1, the meter will always see 3:1, no matter
how much you twist the tuner knobs.
While not the same model as yours, my old MFJ tuner had settings marked
"coax 1" which put the RF through the tuner, and "coax 1 direct", which
bypassed the tuner..
BTW: I had another change of heart and dropped my 40-80-160 loaded dipole
yesterday and put the 80 meter Windom back up.
73, Steve KW3A
----- Original Message -----
From: "T Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, October 03, 2008 7:16 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
>>
>
|
