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:[email protected]] 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" <[email protected]> Cc: "topband List" <[email protected]> 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 <[email protected]> To: ''''''topband List' <[email protected]> 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 _________________ Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus _________________ Topband Reflector Archives - http://www.contesting.com/_topband
