On 2/13/2011 1:53 PM, K8RI on TT wrote:
> On 2/13/2011 1:25 PM, Gary Slagel wrote:
>> I recently built 2 verticals for 80 and 160 by shuntfeeding my tower. They
>> both seem to load nicely and are broadbanded, partly because of an
>> insufficient radial system.
>>
>> When I transmit on either 160 or 80 the meter on my rotator controller
>> deflects.... this makes sense since I'm running rf right through the
>> rotator. Till now I've run only 100 watts thru the antennas but I'd like
>> to see if the antennas will handle a KW ok. I'm wondering if there's any
>> chance of damage to the rotator (Ham IV) if I do this. I'd guess not but
>> it makes me a little nervous.
> <snip>
>
> The chokes/baluns I used were 5, 2.4" 31 Mix toroids with 5 turns of
> LMR-400.
Most probably understood what I meant, but just-in-case:
I should have said that the choke consists of 5 turns of LMR-400 on a
stack of 5, 2.4", 31 mix toroid cores.
73
Roger (K8RI)
> I'd try one in the rotator cable near the control box to see what happens.
>
> Read Jim Brown's (K9YC) RFI tutorial
> http://www.audiosystemsgroup.com/RFI-Ham.pdf about toroids, RFI, baluns,
> and audio interfacing. It's well worth the time.
>
> 73
>
> Roger (K8RI)
>>
>> Currently 10 watts deflects the meter about 10%. 100 watts deflects it
>> about 25%.
>>
>> Anyone have a thought on this?
>>
>> Thanks,
>>
>> Gary Slagel
>> Hot Springs, SD
>> N0SXX
>> http://marina.fortunecity.com/sanpedro/351
>>
>>
>>
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