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Total 406 documents matching your query.

181. Re: Topband: 2 Parallel Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Wed, 23 May 2012 18:51:30 -0400
Is this box sealed in epoxy? Why hasnt someone reverse engineered it and published the schematic? If anyone has a bad one send it to me; the least I can do is look at it with a VNA or a GR bridge. Ca
/archives//html/Topband/2012-05/msg00205.html (11,407 bytes)

182. Re: Topband: 2 Parallel Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Wed, 23 May 2012 20:26:25 -0400
Has DXE actually made that claim publicly? I fail to see how they can stop anyone from reverse engineering for personal use. I doubt they could even spell Customer Relations from reports Ive heard. C
/archives//html/Topband/2012-05/msg00207.html (10,409 bytes)

183. Re: Topband: 2 Parallel Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Thu, 24 May 2012 10:24:22 -0400
I figured that word would raise a flag. Lets say privately sharing the results which leaves no footprints behind. Bottom line is that Id very much like to do a full evaluation and see if it even come
/archives//html/Topband/2012-05/msg00215.html (12,395 bytes)

184. Re: Topband: 2 Parallel Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Thu, 24 May 2012 14:08:55 -0400
You said the same thing yesterday and I offered an opinion. Carl _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
/archives//html/Topband/2012-05/msg00219.html (10,875 bytes)

185. Re: Topband: 2 Parallel Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Thu, 24 May 2012 14:13:07 -0400
If you have to ask you cant afford it.....Wasnt that part of the Rolls Royce ads in the 30's? Carl KM1H _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
/archives//html/Topband/2012-05/msg00220.html (10,703 bytes)

186. Re: Topband: radial wire source (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Tue, 5 Jun 2012 09:35:48 -0400
Going with #14 would be fine for the first 4-8 if you are keeping a running log of measurements; otherwise its overkill. As far as pricing the local surplus dealer has any gauge at $3 a pound and Ive
/archives//html/Topband/2012-06/msg00035.html (8,346 bytes)

187. Re: Topband: Detuning transmit antenna in receive (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Sun, 17 Jun 2012 12:16:52 -0400
If its RF that is a concern the only positive method would be feeding it into a 50/75 Ohm resistor when transmitting. I had to do that some years ago when a Beverage ran between the phased vertical p
/archives//html/Topband/2012-06/msg00139.html (9,811 bytes)

188. Re: Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Sun, 17 Jun 2012 19:59:39 -0400
Sounds like a 1/4 wave vertical to me if its toploaded enough to resonate. Do the radials pass over or under the Beverage? Carl KM1H Carl KM1H _______________________________________________ UR RST I
/archives//html/Topband/2012-06/msg00149.html (9,123 bytes)

189. Re: Topband: Beverage Antennas & Trees (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Wed, 20 Jun 2012 12:40:55 -0400
Mine are installed thru the woods and I spent considerable time trimming out low growth plus interfering branches. The path doesnt deviate over a feet in order to pass to the side of trees and I had
/archives//html/Topband/2012-06/msg00166.html (8,620 bytes)

190. Re: Topband: Beverage Antennas & Trees (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Wed, 20 Jun 2012 18:31:32 -0400
Since "work very well" is entirely subjective it means little unless there is an ideal benchmark to compare against. Yes, Ive stressed the transformer design and construction to you several times on
/archives//html/Topband/2012-06/msg00176.html (10,916 bytes)

191. Re: Topband: Chokes for Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Thu, 21 Jun 2012 13:50:53 -0400
RG-178 is the Teflon 50 Ohm equivalent of RG-174 and RG-179 is a 75 Ohm version. I have several thousand feet of RG-179 available I can cut to length pretty cheap. Carl KM1H _________________________
/archives//html/Topband/2012-06/msg00187.html (15,592 bytes)

192. Re: Topband: Chokes for Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Thu, 21 Jun 2012 14:12:23 -0400
I use only quad shield and flooded here and Im 25 miles from salt water. Experience has told me the other stuff is good only for indoors unless you want to replace it every few years as the common mo
/archives//html/Topband/2012-06/msg00189.html (12,291 bytes)

193. Re: Topband: Chokes for Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Thu, 21 Jun 2012 14:18:08 -0400
Another reason to be leery of crimp connectors. My soldered connector stubs are still fine after 25 years at 2 locations in very high humidity enviroments. Carl KM1H _________________________________
/archives//html/Topband/2012-06/msg00190.html (10,865 bytes)

194. Re: Topband: Reducing Noise in the Shack (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Thu, 21 Jun 2012 14:49:21 -0400
You can build many excellent line filters for the cost of one of anything from DXE, etc. I build mine into the older style USA made outlet strips using standard ferrite rods, and AC rated disc caps w
/archives//html/Topband/2012-06/msg00191.html (9,250 bytes)

195. Re: Topband: Chokes for Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Thu, 21 Jun 2012 15:54:33 -0400
The subject was LMR-400 which, of course, is not flooded and uses a tinned copper weave over aluminum foil. If they decided to go with flooding I might even use it outdoors. Of equal concern is the v
/archives//html/Topband/2012-06/msg00195.html (10,881 bytes)

196. Re: Topband: Chokes for Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Thu, 21 Jun 2012 20:04:12 -0400
Its often hard to kep track the way a few go suddenly tangential. Thats a long sentence but yeah, thats where we started from yesterday. Ive been guilty of taking a side trip at times also (-; I thou
/archives//html/Topband/2012-06/msg00203.html (11,980 bytes)

197. Re: Topband: Chokes for Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Thu, 21 Jun 2012 20:27:35 -0400
Thats how I lost the RG-11 flooded decades ago. After the bites the water went both ways and being the frugal type I checked.... Only short lengths of 10 to maybe 40' were salvagable out of 750' as w
/archives//html/Topband/2012-06/msg00204.html (11,696 bytes)

198. Re: Topband: Reducing Noise in the Shack (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Thu, 21 Jun 2012 21:58:51 -0400
Differential mode filtering goes inside the outlet strip and ferrites on the outside take care of common mode on my filters. Ferrites can be externally added to any DM only filter. Carl KM1H ________
/archives//html/Topband/2012-06/msg00205.html (9,527 bytes)

199. Re: Topband: Coax for Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Fri, 22 Jun 2012 16:03:40 -0400
My first experience with non bonded foil on CATV cables was in the late 70's when RG-59 type foam was widely used. Bad stuff. In the mid 80's I was in charge of a commercial data, video, and voice in
/archives//html/Topband/2012-06/msg00213.html (14,333 bytes)

200. Re: Topband: QRP and Bird 43 Watt meter help (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Sat, 30 Jun 2012 18:34:41 -0400
Simply going to the Bird site would have given you a glimpse at one of their manuals that has the correction factors needed. Carl KM1H _______________________________________________ UR RST IS ... ..
/archives//html/Topband/2012-06/msg00254.html (8,430 bytes)


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