[Elecraft] 135ft flat-top with K2, KAT2, BL2, and 450 ohm feedline

[Larry Phipps]

I have a 135' OCF (Off Center Fed) dipole which is coax fed with a 6:1 
balun at the feedpoint, and it works on all bands from 80-10 except 15 
with my K2/KAT2. Performance seems very good an all bands except 30m, 
where it's just OK.

Larry N8LP



Karl Larsen wrote:
> Zac Brown wrote:
>> Fellow Elecrafters,
>>
>> I am putting up a 135 ft flat-top at my QTH.  I'll be feeding it with 
>> about 60 ft. of 450 ohm ladder line, connecting the feedline to the 
>> BL2, and tuning it with the KAT2.
>    With the balun and auto-tuner you have a great antenna system! 
> However it may be the wrong length. I use the 88 foot flat-top which 
> works just fine on 80 and 40 meters, and 30 and 20 meters as well. 
> With 135 feet of wire your antenna will not load up well on 40 and 20 
> meters. But it will work great on 80 meters.
>
>    The flat-top length is not real important and it should not be 
> resonant at the Ham bands. The 88 feet is nice because on 20 meters it 
> is a double bazzoka and has gain off each side of the dipole.
>
> 73 Karl K5DI
>
>>
>> I was wondering if anyone on the list has tried this arrangement and 
>> could comment on whether the KAT2 will have any problems tuning this 
>> setup from 80 - 20m.  I'm also curious about which bands work better 
>> with the balun set to 1:1 vs. 4:1 with this setup.
>>
>> Thanks,
>>
>> Zac Brown
>> KD5IEF
>> K2# 4907
>> _______________________________________________
>> Elecraft mailing list
>> Post to: Elecraft at mailman.qth.net
>> You must be a subscriber to post to the list.
>> Subscriber Info (Addr. Change, sub, unsub etc.):
>> http://mailman.qth.net/mailman/listinfo/elecraft   Help: 
>> http://mailman.qth.net/subscribers.htm
>> Elecraft web page: http://www.elecraft.com
>>
>>
>
> _______________________________________________
> Elecraft mailing list
> Post to: Elecraft at mailman.qth.net
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft   
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>
>
>