Author: Dan Maguire via TowerTalk <towertalk@contesting.com>
Date: Fri, 25 Jul 2014 11:13:02 -0700
Duh. I completely forgot about changing the number format. Thanks for the whack on the top of my head. :) There are some obscure reasons why that won't work if the build table is made part of an Auto
Author: Hans Hammarquist via TowerTalk <towertalk@contesting.com>
Date: Sat, 26 Jul 2014 14:27:25 -0400 (EDT)
Beside wonder how you are going to handle the cut-off piece, I would try a regular tube cutter. I am using one with carbide wheels and that seems to cut anything. Nothing but hand power is used. Good
Author: TexasRF--- via TowerTalk <towertalk@contesting.com>
Date: Sat, 26 Jul 2014 14:42:45 -0400 (EDT)
What a same to cut up a nice mast like that! That will destroy it's real value if you decide to sell it at a later date. Maybe you could install a small loop yagi or dual band 2m/70cm vertical at the
Author: TexasRF--- via TowerTalk <towertalk@contesting.com>
Date: Sat, 26 Jul 2014 20:47:14 -0400 (EDT)
In a private email, Vic tells me about the difficulty working with the very heavy and long mast. I get that, it would be a chore for anyone. In a previous installation I had a 25ft long mast installe
Author: Hans Hammarquist via TowerTalk <towertalk@contesting.com>
Date: Wed, 30 Jul 2014 08:37:37 -0400
Nathan, Just screw them in yourself. I (with the help of my son) screwed mine in with the help of a sledge hammer and a brake bar. You "just" turn the anchor as you allow it to screw itself into the
Author: Norm via TowerTalk <towertalk@contesting.com>
Date: Thu, 31 Jul 2014 09:26:40 -0400 (EDT)
I have 800' of AB105C tower that was just removed, it is still assembled in 20 to 40 pieces. The tower were used as rhombic antenna supports and were in heights of 50' and 80'. Each tower has a fold
Author: Ralph Bolt via TowerTalk <towertalk@contesting.com>
Date: Thu, 31 Jul 2014 14:35:57 -0700
I use this gear motor on a home-brew frame to raise my Texas Tower TMM 541. It's slow but effective. I simply put a chain sprocket on the motor and on the Fulton crank handle, built a frame to atta
Author: K7LXC--- via TowerTalk <towertalk@contesting.com>
Date: Fri, 1 Aug 2014 11:33:45 -0400 (EDT)
Houston, T exas so ice loading would not be a factor.? From time to time I do use legal limit AM and SSB, so that might be a factor.? At one time I used a HyG ain 402BA but took it down years ago wh
Author: K7LXC--- via TowerTalk <towertalk@contesting.com>
Date: Fri, 1 Aug 2014 11:38:23 -0400 (EDT)
Moxon modification as a few of you suggested. Okay, what are the big advantages of a Moxon over a stock CC 2L 40? The CC has 250 kHz of bandwidth and for a given boom length the gain would be the sa
Author: K7LXC--- via TowerTalk <towertalk@contesting.com>
Date: Fri, 1 Aug 2014 11:41:34 -0400 (EDT)
it's been great. Covers the whole 40-meter band with good SWR and gain. It's good enough to have given me a 1st place USA finish in a CQ WW 40-meter single-band category many years ago. Has lasted 1
Author: Mike Fahmie via TowerTalk <towertalk@contesting.com>
Date: Fri, 1 Aug 2014 09:51:07 -0700
It's a pleasure to find a list that produces such knowledgeable responses to tech questions! To elaborate on Rick's response, losses go down in the FR-4 because the RF voltage distributes itself inv
Author: Ralph Bolt via TowerTalk <towertalk@contesting.com>
Date: Fri, 1 Aug 2014 10:23:52 -0700
Rick: The motor shaft is 1/2 inch diameter. You mistook the size of the keyway for the shaft size. The motor develops 1/9 HP which when geared down from it's approximate motor speed of 1600 rpm to
Author: K7LXC--- via TowerTalk <towertalk@contesting.com>
Date: Fri, 1 Aug 2014 14:22:18 -0400 (EDT)
There are 3 settings: cw, mid and phone. Split the cw and mid dimensions and your 2:1 points are 7.000 and 7.250. Cheers, Steve K7LXC _______________________________________________ ________________
Author: Tom_N2SR via TowerTalk <towertalk@contesting.com>
Date: Fri, 1 Aug 2014 13:16:36 -0700
I forget where I got mine, but I can post a few links of the research I did Monday. It's on my work computer :-) The fiberglass box I have is (I think) 30 inches X 20 inches X 10 inches deep. ALL
Author: K7LXC--- via TowerTalk <towertalk@contesting.com>
Date: Sun, 3 Aug 2014 11:29:37 -0400 (EDT)
whose pitch is independent of the main tuning but which changes rapidly with the PBT setting. There was some discussion of it on this list back in 2006 when I first purchased the radio, but I never
Author: Mike Fahmie via TowerTalk <towertalk@contesting.com>
Date: Sun, 3 Aug 2014 09:28:07 -0700
It's been a looong time since I've made my own boards, but I just pulled one to check it for the qualities you seek. They look acceptable! My technique used spray on photo resist, contact exposure t
Author: Bryan Swadener via TowerTalk <towertalk@contesting.com>
Date: Sun, 3 Aug 2014 14:23:08 -0700
I used negative etch resist, with boards I coated myself. I used a vertical etching tank w/ a heater and aerator (aquarium items). That kept the etchant active and circulating/mixed. My etchant was a
Author: Hans Hammarquist via TowerTalk <towertalk@contesting.com>
Date: Tue, 5 Aug 2014 12:32:27 -0400 (EDT)
When I, (too many years ago) read building instructions for yagi antennas it was claimed that it didn't make a difference if the non driven element was electrically to the bom or not. Now I see that
Author: Hans Hammarquist via TowerTalk <towertalk@contesting.com>
Date: Tue, 5 Aug 2014 13:40:23 -0400 (EDT)
Well Dan, I just received a TX38 from Cycle24. All the elements are insulated from the bom. I don't know if that's for convenience but the elements are clamped to the bom with plastic/hard rubber cle