From: Topband on behalf of Rob Atkinson
Sent: Saturday, September 16, 2017 8:40 AM
To: Arthur Delibert
Cc: topband@contesting.com
Subject: Re: Topband: RF choke/balun
Unless you like listening to noise you don't use an inverted L on 160
(or 80) for receiving.
Unless you like listening to noise you don't use an inverted L on 160
(or 80) for receiving.
Rob
K5UJ
On Sat, Sep 16, 2017 at 6:58 AM, Arthur Delibert wrote:
> I think that’s right if the only issue is your own transmit signal bouncing
> back from the antenna junction and traveling along the ext
ng.com>
Subject: Topband: RF choke/balun
If you have enough radials at or below ground you won't need a common
mode choke. You don't say if your inverted L will have an elevated
ground system or not. If the ground system consists of 60 or more
radials you can probably put a matching netwo
t: Saturday, September 16, 2017 8:07 AM
Subject: Re: Topband: RF choke/balun
Hi
Thanks for the replies, no I will be using radials on the ground, amount
unknown,
Thanks
Trevor
EI2GLB
- Original Message -
From: "Mike Waters"
To: "MR TREVOR DUNNE"
Cc: "topban
Hi
Thanks for the replies, no I will be using radials on the ground, amount
unknown,
Thanks
Trevor
EI2GLB
- Original Message -
From: "Mike Waters"
To: "MR TREVOR DUNNE"
Cc: "topband List"
Sent: Friday, 15 September, 2017 18:56:59
Subject: Re: Topb
If you're going with elevated radials, then a feedline choke is a must.
Place it within a few feet of the feedpoint.
Use four or five stacked 2.4" diameter #31 ferrite toroid cores with about
six turns of coax wound through them. See K9YC's excellent reference to be
sure.
73, Mike
www.w0btu.com
If you have enough radials at or below ground you won't need a common
mode choke. You don't say if your inverted L will have an elevated
ground system or not. If the ground system consists of 60 or more
radials you can probably put a matching network out and the feedpoint
and forget about fooling
Hi All
I am planning on making an RD Choke for my 160m inverted L and was wondering
what others use,
I was thinking of 3 stacked ft240-43 cores and maybe 10-12 turns of some rg316
or the like small coax,
With 61 or 31 be a better material to use and do I need more or less turns,
I'm loosely w