Search String: Display: Description: Sort:

Results:

References: [ +from:n4zr@contesting.com: 269 ]

Total 269 documents matching your query.

241. Re: Topband: Replacing F Connectors with BNCs (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Thu, 14 Nov 2013 07:38:30 -0500
That is certainly possible, Frank - I've been using Ideal compression connectors from Home Depot. I have not had any reliability problems with them at all - they are just a pita to connect and discon
/archives//html/Topband/2013-11/msg00190.html (8,133 bytes)

242. Topband: bias tee (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Thu, 14 Nov 2013 07:58:47 -0500
I am using my coax to feed 12 VDC to my remote RX antenna locations, using a traditional bias tee, but am having some trouble with performance. I'm using 100 uH Radio Shack chokes in my bias tee, and
/archives//html/Topband/2013-11/msg00191.html (6,794 bytes)

243. Re: Topband: Replacing F Connectors with BNCs (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Thu, 14 Nov 2013 09:18:41 -0500
Thanks, all - you've persuaded me. 73, Pete N4ZR Check out the Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com. For spots, please go to your favorite ARC V6 or
/archives//html/Topband/2013-11/msg00195.html (10,787 bytes)

244. Topband: Spam apparently from me (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Fri, 22 Nov 2013 17:18:28 -0500
I am starting to get bounce notices for mail I didn't send, some of it with a bogus name associated with my address, so it looks like one of the creeps out there has my address. If you see anything a
/archives//html/Topband/2013-11/msg00326.html (7,147 bytes)

245. Re: Topband: Easy-to-learn 160 contest logging program? (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 04 Dec 2013 17:12:18 -0500
It would make sense to raise this on n1mmlogger@yahoogroups.com. For that matter, a quick search will find a number of recent threads on exactly this topic. 73, Pete N4ZR Check out the Reverse Beacon
/archives//html/Topband/2013-12/msg00033.html (9,996 bytes)

246. Topband: Buffaloed by a bias tee (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 22 Jan 2014 15:32:24 -0500
I'm still wrestling with the bias tee for my 1-of-8 remote beverage switch. If I use a cliplead to connect a 270-ohm dummy load, bypassing the relay, and connect an MFJ-259B to the receiver port on t
/archives//html/Topband/2014-01/msg00192.html (7,786 bytes)

247. Topband: Buffaloed by a bias tee (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 22 Jan 2014 17:20:15 -0500
Thanks to everyone for their suggestions - consensus seems to be that the homebrew chokes are not enough reactance at 1.8 MHz, so I'll get some store bought ones at 220 uH or more. I tried battery po
/archives//html/Topband/2014-01/msg00194.html (7,671 bytes)

248. Re: Topband: Buffaloed by a bias tee (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Thu, 23 Jan 2014 11:07:56 -0500
Hi. Well, it does indeed seem to clinch it - when I power the tee but don't draw any current, the impedance measured by the MFJ does not change. So now to find some of the right sort of RFC. 73, Pete
/archives//html/Topband/2014-01/msg00204.html (9,783 bytes)

249. Re: Topband: Buffaloed by a bias tee (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Thu, 23 Jan 2014 13:45:29 -0500
Tom, I appreciate your concern. I have made these changes - I am now using a shunt choke (homebrew,, measuring 45 uH) and a smaller series capacitor.. Now all I have to do is to find a source of some
/archives//html/Topband/2014-01/msg00207.html (14,158 bytes)

250. Topband: End of a bias tee adventure? (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Fri, 24 Jan 2014 09:57:02 -0500
After making all of the recommended changes, I hooked up my MFJ and got reads completely normally, as does shorting the input (R=0_ If I had managed to damage the MFJ with DC voltage on the input, wo
/archives//html/Topband/2014-01/msg00223.html (7,516 bytes)

251. Topband: Submerging variable caps in oil as substitute for vacuum variables (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 29 Jan 2014 17:42:20 -0500
The omega match for my shunt fed tower uses two 300 uF roughly 3000-volt variables I bought from Henry radio a few years ago. I think occasionally about running more than 100 watts on 160, but the co
/archives//html/Topband/2014-01/msg00329.html (7,331 bytes)

252. Topband: oil-submerged variables (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Thu, 30 Jan 2014 06:44:04 -0500
Thanks, everyone. I had not thought about the possible difference between 600M and 160 in terms of heating. Jon's suggestion of using big old micas sure seems like a good one if I can find what I nee
/archives//html/Topband/2014-01/msg00345.html (6,775 bytes)

253. Re: Topband: Speking of Hardline (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Thu, 30 Jan 2014 14:33:39 -0500
I don't know about anyone else's cable company, but when the prices of scrap metal went up a few years ago Comcast emptied out their local scrap yard. Actually, I'm just supposing that's the reason.
/archives//html/Topband/2014-01/msg00366.html (8,957 bytes)

254. Re: Topband: In search of resonance (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Fri, 31 Jan 2014 06:27:06 -0500
To my amazement, a 5000-watt AM station on 1550 KHz 5 miles away is enough to clobber my MFJ-259's usefulness during the day. Fortunately they drop to 6 watts at local sundown (what do you suppose th
/archives//html/Topband/2014-01/msg00373.html (9,748 bytes)

255. Re: Topband: In search of resonance (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Fri, 31 Jan 2014 06:51:07 -0500
On 160, that is. 73, Pete N4ZR Check out the Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com. For spots, please go to your favorite ARC V6 or VE7CC DX cluster n
/archives//html/Topband/2014-01/msg00374.html (10,366 bytes)

256. Topband: Remote RX antenna switch - the end of the story (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Fri, 31 Jan 2014 12:40:04 -0500
I'm getting aHeathkit 1480 - this homebrew thing simply isn't worth the tens of hours I've put in, all to no avail. Thanks to everyone for trying to help. -- 73, Pete N4ZR Check out the Reverse Beaco
/archives//html/Topband/2014-01/msg00376.html (6,770 bytes)

257. Re: Topband: Passive Receive Antenna Splitter (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Sat, 15 Mar 2014 17:44:15 -0400
Typically the CATV splitters are marked 5-1000 MHz or similar. I've often wondered how much rolloff there was beyond the basic 3-4 dB down at topband. I have a Clifton that I built myself, but have n
/archives//html/Topband/2014-03/msg00109.html (10,039 bytes)

258. Re: Topband: Crossed Field Antenna (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Sat, 12 Apr 2014 10:55:42 -0400
From Wikip[edia - "A *crossed field antenna*, or CFA, is a controversial type of radio antenna <http://en.wikipedia.org/wiki/Antenna_%28radio%29> for long <http://en.wikipedia.org/wiki/Longwave> and
/archives//html/Topband/2014-04/msg00016.html (9,643 bytes)

259. Topband: DC bias tee question (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 21 May 2014 16:01:29 -0400
I've been looking at the Shared Apex Loop, and one thing I am puzzled by (among many) is that the bias tee/DC coupler circuit has both sides of the 75-ohm feed coming in from the antenna and the DC s
/archives//html/Topband/2014-05/msg00018.html (7,134 bytes)

260. Re: Topband: Skimmer calibration (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Mon, 18 Aug 2014 12:22:56 -0400
It's also worth mentioning that you can evade the Skimmer's "wait 10 minutes before re-spotting" limitation simply by QSYing 500 Hz or sobefore re-sending - that way you can get a lot of data points
/archives//html/Topband/2014-08/msg00177.html (15,821 bytes)

Current List: 241 - 260
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14]
This search system is powered by Namazu