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41. Re: Topband: 160 power (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 23 Mar 2017 13:08:15 -0500
It doesn't embarrass me at all. Once you have done all you can to improve your rx within reason, then run all the power you can. If the other station can't put a signal into my QTH I can copy then t
/archives//html/Topband/2017-03/msg00090.html (8,446 bytes)

42. Re: Topband: Ladder line Beverage Installation (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 13 Apr 2017 08:58:20 -0500
Why don't you nail or screw a cross piece of needed length to the top of each post, and screw a threaded porcelain standoff insulator so it sticks up on each end. You can find them at hamfests. They
/archives//html/Topband/2017-04/msg00024.html (7,009 bytes)

43. Topband: Radials question (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Tue, 13 Jun 2017 05:02:45 -0500
I don't know the DX Eng. product. Usually "wider bandwidth" means flatter vswr curve at the load. There are right and wrong ways to achieve this. Right: wider driven radiator. Wrong: few radials or
/archives//html/Topband/2017-06/msg00031.html (7,997 bytes)

44. Re: Topband: Solar eclipse and 160m propagation (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 6 Jul 2017 05:15:36 -0500
Read this: http://www.skyandtelescope.com/2017-total-solar-eclipse/how-to-hear-the-solar-eclipse/ Rob K5UJ _________________ Topband Reflector Archives - http://www.contesting.com/_topband
/archives//html/Topband/2017-07/msg00017.html (6,635 bytes)

45. Re: Topband: Ecipse (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 21 Aug 2017 19:02:50 -0500
I went out into the parking lot at work at 1:15 p.m. Central Time and tried listening with my car radio to 650, 750 and 1510. I am about 40 miles west of Chicago. With the car omni directional antenn
/archives//html/Topband/2017-08/msg00027.html (8,245 bytes)

46. Topband: RF choke/balun (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Fri, 15 Sep 2017 11:34:17 -0500
If you have enough radials at or below ground you won't need a common mode choke. You don't say if your inverted L will have an elevated ground system or not. If the ground system consists of 60 or m
/archives//html/Topband/2017-09/msg00041.html (6,524 bytes)

47. Re: Topband: RF choke/balun (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Sat, 16 Sep 2017 07:40:49 -0500
Unless you like listening to noise you don't use an inverted L on 160 (or 80) for receiving. Rob K5UJ _________________ Topband Reflector Archives - http://www.contesting.com/_topband
/archives//html/Topband/2017-09/msg00047.html (7,771 bytes)

48. Re: Topband: RX/TX Antenna decoupling, (OFF LIST) (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 5 Oct 2017 08:44:19 -0500
I discovered my rx antennas worked much better if my tx antenna was completely disconnected from the station. Most coaxial relays or T/R switches only break the center conductor. That's not good enou
/archives//html/Topband/2017-10/msg00009.html (7,218 bytes)

49. Re: Topband: RX/TX Antenna decoupling, (OFF LIST) (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Fri, 6 Oct 2017 05:15:19 -0500
I used a P&B open frame relay 4PDT but a single throw will work. What's important is that the relay use metal other than steel (or other magnetic metal) for the RF path. The P&B PM17DY satisfies thi
/archives//html/Topband/2017-10/msg00030.html (7,977 bytes)

50. Topband: Fwd: Fw: Solar Storm September 6th in real time Video - K5UJ de DK7PE (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Fri, 6 Oct 2017 20:46:46 -0500
Posting for Rudi R.A. Hi Rob, I tried to post this infor regarding the latest strongest solar storm since 12 years. Unfortunately I can not post it as my email is not known. Could you please load it
/archives//html/Topband/2017-10/msg00036.html (8,452 bytes)

51. Re: Topband: FT8 discussion (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 30 Nov 2017 05:54:24 -0600
Actually the problem with the alleged QRM and FT8 is more about simply identifying ham computerized modes of digital transmission and reception and separating them out from the rest of the noise gene
/archives//html/Topband/2017-11/msg00216.html (8,374 bytes)

52. Re: Topband: FT-8 question (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 4 Dec 2017 11:55:13 -0600
Don't let noise stop you from transmitting. Nope, I am on a 50 x 100 foot lot in town. Try getting a pair of small rx loops, two rotators, and a phasing network. I have two pesky noise sources from
/archives//html/Topband/2017-12/msg00022.html (8,012 bytes)

53. Topband: Radial Wire System Comparison - (was adding a parasitic reflect (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 1 Feb 2018 07:58:06 -0600
multi-tower array performance when using insulated radial wire versus uninsulated wire when using a bus wire at the radial overlap points. Since his worked in the 1950s mostly focused on directional
/archives//html/Topband/2018-02/msg00005.html (8,305 bytes)

54. Re: Topband: 1/2 wave inv L (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 19 Feb 2018 12:16:17 -0600
A 180 or 190 degree vertical radiator presents a few different problems compared to one 90 degrees long, due to the high voltage at the feedpoint. You can have ground loss there, but since it is more
/archives//html/Topband/2018-02/msg00123.html (7,757 bytes)

55. Topband: decoupling Inv L for loop on Rx (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 14 Mar 2018 08:19:11 -0500
I found I had to put a relay in the feedline to my inverted L to completely open the line on rx. Your typical "coax relay" only opens the center conductor. Fortunately on 160 m. an open frame relay t
/archives//html/Topband/2018-03/msg00060.html (7,334 bytes)

56. Re: Topband: low inv-vee (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Fri, 30 Mar 2018 12:47:57 -0500
1. You never use an inverted L or other vertical for receiving, unless maybe, you are in a QTH so remote and noise free it might work. But in-town, forget it. 2, From my experience, 7 or 8 out of 10
/archives//html/Topband/2018-03/msg00175.html (8,144 bytes)

57. Re: Topband: Soil conductivity maps (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 2 Apr 2018 17:15:24 -0500
Suggest that for Hawaii or other locations where you want specific soil data, contact local small AM or walk in and ask to talk to C.E. Big corp. owned stations will give corporate hq. run around. bz
/archives//html/Topband/2018-04/msg00066.html (8,212 bytes)

58. Re: Topband: Adding chicken wire or mesh on top of radial field (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Tue, 5 Jun 2018 08:08:52 -0500
for permanent installation it's a waste of time because thin wire steel mesh (chicken fence mesh) will rust away in most ground in a short time. Recommend copper mesh but professionally it only seems
/archives//html/Topband/2018-06/msg00011.html (7,805 bytes)

59. Topband: Baker Island DXpedition on 160 (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 13 Jun 2018 11:55:10 -0500
I respectfully suggest the Baker Is. dxpedition be postponed for a few years until band condx improve. It makes no sense to me to mount this costly undertaking to a limited access location when propa
/archives//html/Topband/2018-06/msg00081.html (7,165 bytes)

60. Re: Topband: NEW CALL for WA8WZG (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 11 Jul 2018 10:23:16 -0500
FB on the new call, but is this all you get? Don't they mail out something on paper? Rob K5UJ _________________ Topband Reflector Archives - http://www.contesting.com/_topband
/archives//html/Topband/2018-07/msg00064.html (6,762 bytes)


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