[TowerTalk] Need info on balun for Hygain TH-7DX antenna

[W0MU Mike Fatchett]

Those baluns were and probably still are pretty bad.  Many other better 
solutions available.

On 4/2/2020 2:18 PM, Billy Cox wrote:
> Hi Ray, yes, that is true as to the dual driven element KLM/M2 antennnas.
>
> But the THx series uses the older BN86/newer BN4000 units, which are 1:1.
>
> 73 de Billy, AA4NU
>
>
>> On April 2, 2020 at 3:11 PM Raymond Benny <rayn6vr at gmail.com> wrote:
>>
>>
>> If its feeding a dipole type antenna, which your antenna is,  you need a
>> 1:1balun. 1:1 matches 50 ohm coax to the dipole element, which is near 50
>> ohms.
>>
>>   If it is a dual driven element then use a 4:1 balun. Dual driven element
>> impedance is near 200 ohm and is transforms 50 ohm for the coax.
>>
>> Ray
>> N6VR
>>
>> On Thu, Apr 2, 2020, 1:01 PM Mark Pride via TowerTalk <
>> towertalk at contesting.com> wrote:
>>
>>> Pretty certain its 1:1
>>>
>>> Regards,
>>>
>>>   Mark, K1RX
>>>
>>>
>>>
>>>
>>>
>>>      On Thursday, April 2, 2020, 04:00:21 PM EDT, <marsh at ka5m.net> wrote:
>>>
>>>   It never ceases to amaze me how much basic technical information is NOT in
>>> product manuals.
>>>
>>> 73,
>>> Marsh, KA5M
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of Phil
>>> Sent: Thursday, April 02, 2020 2:26 PM
>>> To: towertalk at contesting.com
>>> Subject: [TowerTalk] Need info on balun for Hygain TH-7DX antenna
>>>
>>> It appears that the balun on my TH-7 has died.  Can someone please tell me
>>> if this is a 4:1 balun....the Hygain manual is silent on this subject as
>>> far
>>> as I can tell.
>>>
>>> thanks, 73, Phil  W5BVB
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