n8de@thepoint.net wrote:
> Roger,
> I've had good success using the double-core balun kit Wireman sells.
> Not sure why you'd have 3:1 to 4:1 SWR for a well-designed antenna, though.
>
Dipole cut for 3.6 used across the entire 75/80 meter band. Feed point
at resonance is showing 50 ohms J+1. That goes up in a hurry toward the
top end of the band. OTOH I rarely operate above 3.850 let alone
3.900. I just want a safety factor built in. However there is the
occasional Hallicrafters net up around 3.995 I'd like to check in. <:-))
73
Roger (K8RI)
> Make the balun 4:1 and it should play forever.
> Don
> N8DE
>
> Quoting "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>:
>
>
>> I've been looking at the series 830, 831 an 832 balun kits from the
>> wireman. These use T-200-1 and T-200-2 cores. Would a balun like these
>> be capable of handling the full 75/80 meter band with the legal limit
>> CCS (Digital). I figure the SWR could reach between 3 and 4:1.
>>
>> I've not had a good track record using the current batch of W2AU baluns
>> which appear to be pretty light, at least to me.
>>
>> This type of balun also lets me keep the entire antenna at DC ground
>> whereas the choke, or current balun does not. With the number of
>> strikes my tower takes having one half of the dipole floating makes me a
>> bit nervous.
>>
>> Actually the plans, at present, call for the balun at the antenna and
>> then the ferrite beads (choke) back near the remote switch for isolation
>> as shown in the antenna handbook when
>> using multiple, switched slopers.
>>
>> TIA and 73
>>
>> Roger (K8RI)
>> _______________________________________________
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>
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