[TowerTalk] 30/40m on 1 boom

[LB3RE K3RAG Stein-Roar brobakken]

Hello guys
Do you know formula for distance between 40m to open sleeve 30m?

73 Rag LB3RE/K3RAG

---
Best Regards Stein-Roar brobakken

Den 2016-10-07 17:49, skrev Douglas Ruz / CO8DM:
> You can use Open Sleeve method...It is the same describe by Herbert.
> 
> Feeding only the 40m driven element and with only one boom.
> 
> The 30m driven element is not open in the center like classic driven
> element...it is close like a director or reflector...just in one
> piece.
> 
> GL,
> 
> Doug, CO8DM
> ----- Original Message ----- From: "Ed Stallman" <ed.n5dg at gmail.com>
> To: <towertalk at contesting.com>
> Sent: Friday, October 07, 2016 10:47 AM
> Subject: [TowerTalk] 30/40m on 1 boom
> 
> 
>> I like building my antennas , I can build a shortened 2 element 30 or 
>> 40m using loading coils but not sure about having both on same boom . 
>> Be nice using one feedline but I'm okay using separate feedlines  for 
>> each band. I see the big antenna manufactures doing it with success . 
>> Does anyone have a recipe for an antenna like this ? Or can point me 
>> to a URL that I've overlooked in my searching ? Using antenna software 
>> is above my pay grade but good with hand and tools
>> 
>> Thanks Ed N5DG
>> 
>> 
>> 
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