I have one of those mfj things around here somewhere.  It isn't really 
big enough for a coil of any size.  I think it adds capacitance.  I 
tried it on 160 when I first moved back from Nevada on a short antenna, 
and although I could make the radio tune with its internal tuner, I 
couldn't be heard at all, so yes it will match, but that doesn't mean 
you'll be heard. Not a solution in my case.
73
Butch
WA0VJR
Node 3148
Wallace, ks.


On Tue, 1 Jul 2014, Steve 
Forst wrote:

> Tom,
>
> Never used one of these, but I think it is just half of a tuner.   It's
> got a tapped inductor with  a rotary switch  so you can add various
> amounts of inductance  and then tune the auto tuner into it.
>
> You could monkey around with coax length to find something that suits
> your needed band, and maybe lose another band  at the same time.  Or a
> plain old external tuner to match whatever bands  the auto tuner doesn't
> like.
>
>
> I'm not sure how much loss is involved with the MFJ thing,  but it's
> ease of use may make it an attractive option.
>
> 73, Steve KW3A
>
>
>
> On 6/30/2014 4:14 PM, Tom Behler wrote:
>> Hi, all.
>>
>>
>>
>> Has anyone had any experience, either good or bad, with the MFJ tuner
>> extender?
>>
>>
>>
>> Out at the RV, my Alpha Delta DXCC tunes with the TS480 internal antenna
>> tuner throughout the top half of 80 meters, and I'm wondering how much it
>> might extend the tunable range for the lower part of the band.
>>
>>
>>
>> Of course, I ask this question knowing three things right off the bat.
>> First, the DXCC is only 82 feet long, so will obviously be quite narrow on
>> 80 meters.  Second, the lower half of 80 meters goes all the way down to 3.5
>> MHZ, which is a long way away from the middle part of the band at 3.750 MHZ.
>> Third, of course, as we all know, just because an antenna tunes, that
>> doesn't always mean it will perform well at the end of the tuning process.
>>
>>
>>
>>
>>
>> The camp site DXCC already tunes on 10, 15, 17, 20, and 40 meters.  30
>> meters would be nice, but is not a necessity for me at this time.
>>
>>
>>
>> I'm just trying to decide if adding this piece of equipment to my tool box
>> would be worth it in the long run.
>>
>>
>>
>> Tom Behler: KB8TYJ
>>
>>
>>
>>
>>
>
>