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381. Re: Topband: TX relays (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Thu, 9 Oct 2014 13:17:05 -0500
Between contact and coil. I just took 2 photos: http://www.w0btu.com/files/misc/Omron_relay_G2R-1-E-T130/ _________________ Topband Reflector Archives - http://www.contesting.com/_topband
/archives//html/Topband/2014-10/msg00040.html (9,721 bytes)

382. Re: Topband: TX relays (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Thu, 9 Oct 2014 13:18:58 -0500
Ahhh yes. Thanks. I didn't think of that. :-) 73, Mike www.w0btu.com _________________ Topband Reflector Archives - http://www.contesting.com/_topband
/archives//html/Topband/2014-10/msg00043.html (9,367 bytes)

383. Re: Topband: TX relays (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Thu, 9 Oct 2014 13:29:30 -0500
A potential problem with that relay is that it is not sealed. Moisture could get in, condense, and freeze. And if ice forms in the wrong place, the relay might not operate. I've had that happen befor
/archives//html/Topband/2014-10/msg00044.html (9,377 bytes)

384. Re: Topband: TX relays (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Fri, 10 Oct 2014 05:02:27 -0500
The contacts are not gold-flashed, that's just the lighting and reflections that makes it look that way in the photos. They are a cadmium-free silver alloy. Here's the data sheet. http://www.mouser.c
/archives//html/Topband/2014-10/msg00050.html (11,767 bytes)

385. Re: Topband: Beverage wire question (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Fri, 17 Oct 2014 05:53:14 -0500
I started to write a similar reply myself about 30 minutes ago, and then I noticed what he was doing with the WD-1. :-) I didn't do any math, but just looking at Jim's photos (1 attached) and text, p
/archives//html/Topband/2014-10/msg00080.html (8,188 bytes)

386. Topband: Stew Perry QRN forecast (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Fri, 17 Oct 2014 08:38:29 -0500
The pre-Stew 160 contest is this weekend. And from what I can tell from several WX forecasts, the 48 states will be lightning-free this year! :-) Note: the correct dates are at http://www.kkn.net/ste
/archives//html/Topband/2014-10/msg00081.html (6,574 bytes)

387. Re: Topband: KP1 (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Wed, 22 Oct 2014 13:37:42 -0500
I couldn't find a thing there about 160 (or any other band). Did I miss something? 73, Mike www.w0btu.com _________________ Topband Reflector Archives - http://www.contesting.com/_topband
/archives//html/Topband/2014-10/msg00108.html (6,500 bytes)

388. Re: Topband: KP1 (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Wed, 22 Oct 2014 14:20:51 -0500
Thanks to you and to all who replied privately. I didn't doubt that they would be on 160, I was just looking for more information about this event. I didn't realize who this was. :-) 73, Mike www.w0b
/archives//html/Topband/2014-10/msg00110.html (8,882 bytes)

389. Re: Topband: Radial Wire (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Wed, 22 Oct 2014 18:19:37 -0500
You bet it is! Those prices are the best I've seen in some time. 73, Mike www.w0btu.com _________________ Topband Reflector Archives - http://www.contesting.com/_topband
/archives//html/Topband/2014-10/msg00115.html (7,341 bytes)

390. Topband: ARRL CW SS started. Why is nobody on 160? (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sat, 1 Nov 2014 21:34:51 -0500
I just tuned across the low end of 160, and nothing (except one RTTY signal)! Is my receiver broke? I expected to hear at least SOME CW. I did just get struck by lightning a few days ago; maybe I hav
/archives//html/Topband/2014-11/msg00000.html (7,390 bytes)

391. Re: Topband: ARRL CW SS started. Why is nobody on 160? (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sat, 1 Nov 2014 21:51:15 -0500
Thanks, Rick. But some of us are more interested in 160 meters than winning a contest. :-) 73, Mike www.w0btu.com _________________ Topband Reflector Archives - http://www.contesting.com/_topband
/archives//html/Topband/2014-11/msg00002.html (7,720 bytes)

392. Re: Topband: ARRL CW SS started. Why is nobody on 160? (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sat, 1 Nov 2014 22:03:08 -0500
Hi Jim, So THAT'S it! It's the ARRL's fault! :-) I didn't realize that "once per band" was missing from this contest. Thanks and 73, Mike www.w0btu.com Amen. I get on 160 as often as I can - trying t
/archives//html/Topband/2014-11/msg00003.html (7,627 bytes)

393. Re: Topband: New RF interference killing RX at my QTH (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sat, 8 Nov 2014 15:45:47 -0600
What does it sound like? I was going to post the same thing. My background noise level at night has increased on 160 and 80, especially to the NE and SE. It's broadband noise, and not tunable. A litt
/archives//html/Topband/2014-11/msg00031.html (7,492 bytes)

394. Re: Topband: Beverage Termination Question (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Wed, 12 Nov 2014 14:19:12 -0600
You should use separate grounds if possible. I have some info on this at www.w0btu.com/Beverage_antennas.html#Proximity_to_Beverage_antennas See the heading "Multiple Beverages Using a Common Ground"
/archives//html/Topband/2014-11/msg00053.html (7,529 bytes)

395. Re: Topband: Broadband Inverted L (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Thu, 20 Nov 2014 10:17:16 -0600
It sure IS broadbanded. Couple of questions: Can you describe this? I get a 1.1 SWR reading from 1.8 to 1.9 before it moves up to 1.3 and Where are you measuring the SWR? At the feedpoint or at the e
/archives//html/Topband/2014-11/msg00080.html (7,066 bytes)

396. Re: Topband: Broadband Inverted L (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Thu, 20 Nov 2014 12:23:32 -0600
Have you considered elevated radials? Four of them 10' high (or even two!) would be MUCH better than what you have right now. My 160m Inverted-L: http://www.w0btu.com/160_meters.html#inv-l_antenna 73
/archives//html/Topband/2014-11/msg00087.html (7,750 bytes)

397. Re: Topband: 73 mix cores (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Fri, 28 Nov 2014 08:56:48 -0600
Fair-rite also states that multi-aperture ferrite cores (like this one) have greater bandwidth vs. a single-hole core made of the same material. I cannot explain that. I can verify that the losses in
/archives//html/Topband/2014-11/msg00165.html (9,888 bytes)

398. Topband: ARRL 160m contest and DX Window? (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Mon, 1 Dec 2014 09:26:57 -0600
The ARRL 160 meter contest is this weekend. I know there has been a lot of controversy in the past about the 1830 to 1835 segment (the so-called "DX Window"). I understand that if I am in the USA, th
/archives//html/Topband/2014-12/msg00000.html (7,264 bytes)

399. Re: Topband: ARRL 160m contest and DX Window? (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Mon, 1 Dec 2014 09:40:41 -0600
Sorry, I meant to type "... some of the more experienced *Topbanders* ..." While we're at it, how does this apply to the Stew Perry this month? 73, Mike www.w0btu.com _________________ Topband Reflec
/archives//html/Topband/2014-12/msg00002.html (8,430 bytes)

400. Re: Topband: Restistance of wire (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Wed, 3 Dec 2014 14:20:17 -0600
One thing that would affect RF conductor resistance is the paramagnetic properties of the conductor. If, for example, it was bare iron or magnetic steel wire, then we would have eddy current losses.
/archives//html/Topband/2014-12/msg00020.html (8,495 bytes)

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