Gary:

Thanks for the manual citation.

I don't know how I missed it.

Tom Behler: KB8TYJ

----- Original Message ----- 
From: "Gary Lee" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, December 30, 2012 12:32 PM
Subject: Re: More on interfacing Cobra Ultralite Senior with Tentec 238A 
manual tuner


> =46rom the manual section provided, this is a typical t type tuner with =
> a built-in balun.
> No other balun necessary or desirable.
>
> Gary Lee
> [log in to unmask]
>
>
>
> On Dec 24, 2012, at 1:16 PM, Tom Behler <[log in to unmask]> wrote:
>
>> Hi, again all.
>>=20
>> My apologies:
>>=20
>> I should have given more complete info in my last post.
>>=20
>> First of all, the Tentec 238A is rated for up to 2000 watts, so I =
> would
>> think  I'd be ok in that regard, since the most my Ameritron AL811H =
> puts out
>> is about 600 watts.
>>=20
>> Second, here's a more complete set of instructions about antenna
>> connections:
>>=20
>> For balanced feedline systems, adding a=20
>> jumper from SINGLE WIRE to one of the=20
>> BALANCED LINE terminals as shown on the=20
>> rear panel is required. A tin-plated steel=20
>> jumper for this purpose has been provided.=20
>> It is attached to one wing nut connector on=20
>> the back; if balanced line will be used, attach=20
>> the other side of the jumper to the other=20
>> wing nut. Then connect the feedline to the=20
>> two BALANCED LINE terminals.=20
>> ANT position 4 can be coax, single wire, or=20
>> balanced line. ANT 1, ANT 2, ANT 3 must=20
>> be coax only.=20
>> Please note that 238C does NOT allow for=20
>> the connection of either coax-fed and=20
>> balanced line or single wire antennas to the=20
>> ANT 4 connection at the same time. There=20
>> is no switchable configuration for ANT 4 -=20
>> any antennas connected to these jacks will=20
>> be in use. If you have a coax fed antenna=20
>> and a balanced line or single wire antenna=20
>> connected to ANT 4 at the same time, both=20
>> of these antennas will be in use when ANT 4=20
>> is selected from the front panel."
>>=20
>> In light of this new info, would I still be ok without the Balun =
> Designs
>> balun, as far as anyone can tell?
>>=20
>> On the negative side, would using just the tuner and the antenna =
> without the
>> additional Balun Designs balun possibly lead to more stray RF in the =
> shack?
>>=20
>> 73 from Tom Behler: KB8TYJ
>