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Total 406 documents matching your query.

161. Re: Topband: Monopole Radiation Patterns, takeoff angles etc (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Sun, 6 May 2012 21:40:02 -0400
Carl has nothing backwards, best do your research the next time. _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
/archives//html/Topband/2012-05/msg00071.html (11,067 bytes)

162. Re: Topband: Fw: Monopole Radiation Patterns, takeoff angles etc (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Mon, 7 May 2012 13:27:39 -0400
Many horizontal MF BCB wires were in use, The old rooftop WBZ and later WBZA site in Springfield MA on top of the old Westinghouse plant was razed only last November. Some say it was an inverted L st
/archives//html/Topband/2012-05/msg00076.html (12,076 bytes)

163. Re: Topband: Using Video Baluns on 160. (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Mon, 7 May 2012 20:31:39 -0400
A couple of things: What is the conductor size in CAT5 and what is the center to center spacing. With that its easy to calculate Z. Since those TV baluns share a common ground they are likely not tra
/archives//html/Topband/2012-05/msg00088.html (11,225 bytes)

164. Re: Topband: Using CAT5 in place of coax (was video baluns) (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Mon, 7 May 2012 21:27:30 -0400
Loss can be mitigated by a preamp at the antenna end. One application would to be to feed multiple Beverages at a hub without a relay box with its isolation problems and intermittents. Carl KM1H -- O
/archives//html/Topband/2012-05/msg00093.html (9,425 bytes)

165. Re: Topband: Using CAT5 in place of coax (was video baluns) (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Mon, 7 May 2012 21:45:28 -0400
For about 7 years Ive run 250' to the trailer at the base of the big tower where it then went another 150' after a router to a microwave Internet link. It was tied to the same bundle carrying all the
/archives//html/Topband/2012-05/msg00094.html (10,876 bytes)

166. Re: Topband: Using CAT5 in place of coax (was video baluns) (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Mon, 7 May 2012 22:02:47 -0400
Shielded CAT5/6 is readily available. Carl KM1H _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
/archives//html/Topband/2012-05/msg00095.html (11,524 bytes)

167. Re: Topband: Monopole Radiation Patterns, takeoff angles etc (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Mon, 7 May 2012 22:04:53 -0400
Try operating 160 and 10M mobile, you would be surprised at the daytime range even with low power into a 8' antenna on 160. Carl KM1H _______________________________________________ UR RST IS ... ...
/archives//html/Topband/2012-05/msg00097.html (10,940 bytes)

168. Re: Topband: Using CAT5 in place of coax (was video baluns) (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Tue, 8 May 2012 09:23:38 -0400
I didnt say at the same feedpoint; each CAT5 pair is a seperate feed and then you seperate the actual antenna ends and ground rods the 30-40' as suggested. Thats what I do here and there is a minimum
/archives//html/Topband/2012-05/msg00112.html (10,276 bytes)

169. Re: Topband: Monopole Radiation Patterns, takeoff angles etc (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Tue, 8 May 2012 09:38:11 -0400
Thats not exactly what I meant, I was simply stating that "ground wave" on both bands is excellent. When I was a lot younger those bands were very popular with commuters on AM. Radiation at zero degr
/archives//html/Topband/2012-05/msg00113.html (11,406 bytes)

170. Re: Topband: Monopole Radiation Patterns, takeoff angles etc (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Tue, 8 May 2012 09:38:15 -0400
ELF sub communication was to get a signal to a submerged sub and it still took megawatts and an extremely slow bit rate. All it did was to tell the sub to come up enough to deploy its satellite anten
/archives//html/Topband/2012-05/msg00114.html (12,802 bytes)

171. Re: Topband: staying up with the latest technology, receiver evaluation (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Sun, 20 May 2012 08:46:08 -0400
The RAK and RAL are arguably the best regen ever manufactured. There was a pair of them in Emergency Radio aboard a USN tanker I spent a few years on in the 60's and I used them often to keep my code
/archives//html/Topband/2012-05/msg00155.html (10,540 bytes)

172. Re: Topband: staying up with the latest technology, receiver evaluation (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Sun, 20 May 2012 18:46:55 -0400
Yeah, I meant the current regulator. Shipboard power in the 30's wasnt exactly stable. A simple converter to take 160 and 80 down to the RAK's best tuning ratio band would be an interesting experimen
/archives//html/Topband/2012-05/msg00159.html (10,733 bytes)

173. Re: Topband: Two wire Beverage Question (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Tue, 22 May 2012 09:28:19 -0400
My 2 wire Beverages are in the 500-900' range in the air and as BOG's and are used regularly on 30 and 40M with no meaningful degradation. However I wound all my transformers based upon the high RF g
/archives//html/Topband/2012-05/msg00164.html (10,981 bytes)

174. Re: Topband: Two wire Beverage Question (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Tue, 22 May 2012 11:28:48 -0400
How was that measured John? On the bench can miss a lot and flat to me outside usually means excessive loss. Im using WD-1A, WF-16/U, and 2 wire rural telephone cable which is copperweld. Listening
/archives//html/Topband/2012-05/msg00167.html (8,141 bytes)

175. Re: Topband: 2 Parallel Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Wed, 23 May 2012 10:08:58 -0400
I can understand why a fence would be a problem. Theoretically at least parallel Beverages should have no radiation/coupling. But that then means an absolutely perfectly balanced and terminated pair
/archives//html/Topband/2012-05/msg00183.html (9,397 bytes)

176. Re: Topband: 2 Parallel Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Wed, 23 May 2012 14:01:05 -0400
Terro ant kill works well around here. If you cant elevate the RG-6 then find some surplus CATV hardline and remote the switching. There are low cost microwave relays that provide a wiping action tha
/archives//html/Topband/2012-05/msg00191.html (11,607 bytes)

177. Re: Topband: 2 Parallel Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Wed, 23 May 2012 16:27:12 -0400
What the stupid federal pukes dont know wont hurt them. The Terro is a semi liquid gel that ants walk on and touch with their feelers and bring back into the nest; takes a week or two to wipe it out.
/archives//html/Topband/2012-05/msg00196.html (10,835 bytes)

178. Re: Topband: Don Miller and CW Pileup Management (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Wed, 23 May 2012 18:19:57 -0400
I remember all of his DXpeditions, even the ones he wasnt at and have the cards to prove it.. One really comes to mind was him with a card table on some rocks with water showing and Galaxy gear on th
/archives//html/Topband/2012-05/msg00201.html (13,690 bytes)

179. Topband: Microwave relays for Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Wed, 23 May 2012 18:27:57 -0400
A few hours ago I mentioned them and then an online flyer comes thru. This is a different one than what I bought but the specs are similar. Use sections in parallel for DPDT. http://www.goldmine-elec
/archives//html/Topband/2012-05/msg00202.html (9,409 bytes)

180. Re: Topband: 2 Parallel Beverages (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Wed, 23 May 2012 18:48:03 -0400
It can be placed parallel but a few feet away also. Yeah,and Misek lives about 2 miles away but I never hear him on the air. Anyway that was the first Beverage book I bought and quickly discounted it
/archives//html/Topband/2012-05/msg00204.html (12,616 bytes)


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