Trevor, You do not make it clear whether you want to match the antenna with
a hairpin match or with an L match. I find with a hairpin that the
inductance does not change much from the needed but the top loading will
need adjusting. You may find it better to put the 1:1 point at something
like 1.830 then you should be ok from the low end up to 1850 dependent on
how good or poor your ground system really is.
73 Clive GM3POI
-----Original Message-----
From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of MR TREVOR
DUNNE
Sent: 31 August 2018 07:49
Cc: topband List
Subject: Re: Topband: Air Wound Coil
Thanks again for all the replies Guys, I am running so late on getting ready
for this season I am just looking for a quick and easy way out,
I'll get the vertical up and see what I need, I might be over complicating
things as usual,
Thanks
Trevor
EI2GLB
----- Original Message -----
From: "MR TREVOR DUNNE" <ei2glb@eircom.net>
Cc: "topband List" <topband@contesting.com>
Sent: Thursday, 30 August, 2018 21:03:09
Subject: Re: Topband: Air Wound Coil
Thanks for the replies I want to be able to tap it at various points to
allow for some movement up the band, I don't actually know how much
inductance as I don't have the antenna in place yet,
I wound a Homebrew coil last year but I fancied something tidier this time,
I was planning to install it in a nice enclosure and have some relays to
switch the taps ect,
MFJ don't seem to have a contact email on there site it just says to order
and wait to see if it is in stock don't fancy waiting a few months more it's
been 4 already,
Thanks
Trevor
EI2GLB
----- Original Message -----
From: MR TREVOR DUNNE <ei2glb@eircom.net>
To: ''''''topband List' <topband@contesting.com>
Sent: Thu, 30 Aug 2018 07:44:04 +0100 (IST)
Subject: Topband: Air Wound Coil
Hi All
I'm looking for an Air wondering coil like in this link,
http://www.mfjenterprises.com/Product.php?productid=404-0669
I've had one on order from MFJ via a UK company for 4 months now and no sign
of it, I want to build a at matching network for my 160m inverted T using it
or something similar,
Can anyone tell me where I can get one of these or similar that is in stock
today,
I don't have access to the tools/parts to wind one my self,
Thanks
Trevor
EI2GLB
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