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1. [TowerTalk] upper/lower/both box (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Fri, 18 Jun 2010 07:22:29 -0700; does anybody remember how these box's were configured ? Buried some where in mu old W2PV material... there is a diagram of one. Think it used a pair of P+B DPDT relays. This is for 2 x identical 40m; /archives//html/Towertalk/2010-06/msg00195.html (7,731 bytes)
2. Re: [TowerTalk] upper/lower/both box (score: 1): Author: N7KA@comcast.net; Date: Fri, 18 Jun 2010 15:14:15 +0000 (UTC); Yagi Antenna Design by W2PV, page6-3. Arne N7KA _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://; /archives//html/Towertalk/2010-06/msg00199.html (9,206 bytes)
3. Re: [TowerTalk] upper/lower/both box (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Fri, 18 Jun 2010 11:29:06 -0400; For monoband stacks I like the N4TZ "Invisible Stub" design from NCJ a few years back. You will need to add an extra box/relay with half-wave coax for the out of phase condition. The N4TZ design avoi; /archives//html/Towertalk/2010-06/msg00201.html (8,823 bytes)
4. Re: [TowerTalk] upper/lower/both box (score: 1): Author: "Ted Bryant" <W4NZ@comcast.net>; Date: Fri, 18 Jun 2010 13:27:25 -0400; National Contest Journal: 2004 November/December issue,p.8, Improved Stack Switching with Invisible Stubs by N4TZ 1980 November/December issue,p.12, Upper-Lower-BIP-BOP Switch by K1GQ 1980 September/; /archives//html/Towertalk/2010-06/msg00206.html (9,312 bytes)

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