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

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Need info on balun for Hygain TH-7DX antenna
From: Gary K9GS <k9gs@gjschwartz.com>
Date: Thu, 02 Apr 2020 18:39:00 -0500
List-post: <mailto:towertalk@contesting.com>
Around here the HyGain "baluns" are called RF Fuses...73,Gary K9GS
-------- Original message --------From: W0MU Mike Fatchett <w0mu@w0mu.com> 
Date: 4/2/20  4:16 PM  (GMT-06:00) To: towertalk@contesting.com Subject: Re: 
[TowerTalk] Need info on balun for Hygain TH-7DX antenna 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@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@contesting.com> wrote:>>>>> 
Pretty certain its 1:1>>>>>> Regards,>>>>>>   Mark, K1RX>>>>>>>>>>>>>>>>>>      
On Thursday, April 2, 2020, 04:00:21 PM EDT, <marsh@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@contesting.com> On Behalf Of 
Phil>>> Sent: Thursday, April 02, 2020 2:26 PM>>> To: 
towertalk@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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