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
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|