[OKDXA] Balanced Line Feed

[Jay Bromley]

Hi Jerry,
I was going to mention this, but you beat me to the punch reading the 
manual, hi.  A lot of T match tuners like the MFJ, etc, need that little 
jumper to hook up the internal balun to the ladder line output.

If you can find an old Johnson matchbox, you may find it will work much 
better for you.  Plus using the Matchbox acts like a bandpass filter.  This 
will help a little if you are using more than one rig nearby.  The old 
Johnson Matchboxes doesn't have 160m and limited tuning range, but work very 
well once you get use to them.  They are also faster to tune up when band 
hopping.

I am sure you can make up a band chart on your tuner that will work as well 
for band hopping.

Have fun and good to see you guys at Hamcom this year!

73 de w5jay/jay..


> When all else fails read the book on your tuner.  A simple wire jumper 
> brought all alive.
> 20 meters still open at 1AM to the east coast and Pacific.  Maybe the 
> bands will
> favor us next week for FD which is what this antenna test was all about.
>
> Thanks Coy for the response - made us get the book out on the tuner.
>
> Jerry - K5YAA
>
>
>>Date: Sat, 16 Jun 2007 23:48:48 -0500
>>To: n5ok at arrl.org, Discussion of OKDXA <okdxa at mailman.qth.net>
>>From: Jerry Chouinard <k5yaa at okdxa.org>
>>Subject: Re: [OKDXA] Balanced Line Feed
>>
>>Will do on the balun and NO have not used the tuner with balanced line 
>>before.
>>Actually have two tuners and both act similar.
>>
>>Mark has just pulled out the 19th edition of the antenna handbook - we are 
>>on a roll now!
>>
>>73 es tnx for the input - Jerry K5YAA
>>
>>At 10:46 PM 6/16/2007 -0500, you wrote:
>>>Jerry,
>>>
>>>Have you used that tuner with ballanced line before?  I think I would
>>>check it out.  If you have a 4:1 balun try it hooked to the ladder line
>>>and tune it with the unbalanced coax output of the tuner.
>>>
>>>Coy
>>>--
>>>Coy Day, N5OK
>>>20685 SW 29
>>>Union City, OK 73090
>>>405-483-5632
>>>
>>>Jerry Chouinard wrote:
>>> > Some input requested on what we might be doing incorrectly.
>>> >
>>> > We just unwrapped a Wireman CQ881 and installed per the single sheet
>>> > instructions.  It uses ladder line and this is the first time I have
>>> > employed such.
>>> >
>>> > Using a Vectronix tuner ( fairly capable device ) I tied the ladder 
>>> > line
>>> > to
>>> > the balanced posts and proceeded to try and find a signal.  Very puny
>>> > signals, a HamStik sitting on the ground blew this wire antenna away.
>>> >
>>> > The CQ881 uses 133' of stranded copper wire which is cut in half and
>>> > attached to a provided center insulator.  End insulators were attached 
>>> > and
>>> > the ladder line is attached as noted to the each wire ( much like you
>>> > would
>>> > do a Vee or Dipole ).
>>> >
>>> > We hoisted the assembly up on a 50' steel pole making sure none of the
>>> > wire
>>> > was touching the pole.  Tied the ends off with nylon rope.  The whole
>>> > thing
>>> > does resemble a Vee.  Tied the ladder line to the tuner and just 
>>> > pitiful
>>> > signals if any at all.  Running the tuner thru it's paces we did 
>>> > manage to
>>> > "peak" a few signals but the HamStik was MUCH better.  A 59 signal on 
>>> > the
>>> > HamStik was 33 on the CQ881.
>>> >
>>> > Dang if we can figure out what the deal is.  We think there should at
>>> > least
>>> > be some decent receive as a coat hanger would produce better signals.
>>> >
>>> > Any sage advice on these types of antennas?  It's a biggun that spans
>>> > quite
>>> > a bit of territory - figured we could at least hear with it.
>>> >
>>> > K5YAA
>>> >
>>> > _______________________________________________
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>>> > http://mailman.qth.net/mailman/listinfo/okdxa
>>> >
>>> >
>>>
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