Re: Topband: soldering radials

On Tue, 16 Aug 2011 22:00:10 -0400 Charles Moizeau w...@msn.com wrote: It has been my experience at this QTH in NJ that soldered connections outdoors do not do well with solder that contains lead. Over time the connections all turn dull and often the solder on a well-soldered joint will

Re: Topband: Effect of current max not at base of vertical.

On Tue, 20 Sep 2011 17:17:58 -0400 Guy Olinger K2AV olin...@bellsouth.net wrote: I share the frustration over the very minimal amount of data out there. However... Erection of a 260 foot vertical in a testing environment... G'Day Topbanders, I am not sure how general a conclusions

Re: Topband: Receiver Frontend Protector?

On Sun, 16 Oct 2011 15:31:32 + Missouri Guy n0...@juno.com wrote: If not, what does everyone else use for a receiver frontend protection? I build all my RX antennas with a relay in the transformer box. The relay, which is powered through the coax, opens the loop and shorts out the

Re: Topband: Fwd: Capacitor for Inverted L

On Sun, 16 Oct 2011 09:48:45 -0600 W0MU Mike Fatchett w...@w0mu.com wrote: a low horizontal dipole can work amazing amounts of DX on 160 Amazing high or amazing low? George, AA7JV ___ UR RST IS ... ... ..9 QSB QSB - hw? BK

Re: Topband: Beverage is down

On Sat, 12 Nov 2011 12:35:39 -0600 Mike Waters mikew...@gmail.com wrote: I don't know how it will work on 160 being only 150' long. At 150' it is really not long enough to work as a Beverage on 160 meters (a Beverage needs to be 1 x wavelenght long, or more, indeed, 3 to 5 times more).

Re: Topband: Ticked over intentional interference on top band

On Sat, 21 Jan 2012 08:07:39 -0500 Eddy Swynar deswy...@xplornet.ca wrote: Unfortunately, VE1ZZ has a terrible signal with key clicks out to over1kHz Hi Roger, Sez who...? Jack's keying may well be a tad on the hard side, but his signal HARDLY emits ...key clicks out to over 1 KHz

Re: Topband: It is not so much propagation

On Mon, 19 Mar 2012 16:20:02 -0500 chacuff chac...@cableone.net wrote: QRPers generally do not need Beverages as much as other stations do. Don't QRPers work other QRPers? George, AA7JV ___ UR RST IS ... ... ..9 QSB QSB - hw? BK

Re: Topband: how to hear through static crashes?

On Mon, 26 Mar 2012 19:57:32 -0700 Robin wb6...@socal.rr.com wrote: Maybe this is a good time to share the techniques we individually find successful for hearing through the giant sparks. Here are my experiences from TX3A (and other low-band DXpeditions). On TX3A, for 30 nights in a row, 8

Re: Topband: Home Depot LED bulb interference.

On Thu, 5 Apr 2012 16:01:12 -0400 Mike Greenway k...@bellsouth.net wrote: I wondered how long it would take before they started selling some RFI generating lighting. Soon we can have a complete neighborhood of RFI I have tested compact fluorescent bulbs a couple of years ago and found

Re: Topband: Home Depot LED bulb interference.

On Fri, 6 Apr 2012 11:57:15 -0700 (PDT) Jim F. j_fit...@yahoo.com wrote: ...Since this bulb complies with part 15 of FCC rules It is marked to comply, but it may not. (Part 15 compliance is self-certified. It would be interesting to test it against Part 15 requirements. I believe that one

Re: Topband: Fwd: Re: Home Depot LED bulb interference.

On Fri, 6 Apr 2012 17:24:25 -0600 DAVID CUTHBERT telegraph...@gmail.com wrote: My calculations assume that the LED lamp conducted emissions are at the FCC limit at a single frequency in the 160 meter band. What made me sceptical was the original posting mentioning that the bulb interfered

Re: Topband: 2 Parallel Beverages

Mike, You are willing to run 2 coax cables and have 2 transformers, but don't want to bother with remote relays, etc. You could simply have a single wire, terminated at each end by a transformer. Run from each transformer a coax to the shack. Use a DPDT relay or manual switch in the shack to

Re: Topband: Strange CW Coded Messages

On Mon, 11 Jun 2012 18:37:26 -0400 Herb Schoenbohm he...@vitelcom.net wrote: These fish beacons are sometimes very strong and normally out in the Gulf of Mexico. I just wish I could replicate the QRP transmitter and antennaor is it just the saltwater ground? Herb, It is simple: 2 W

Topband: PT0S DXpedition

G'Day Topbanders, I am happy to announce that due the amazing efforts of PY5EG, Atilano, we got all the permits and licenses needed to mount a DXpedition to St. Peter and St. Paul Rocks in the 2012 November/December time frame. Some difficulties remain, but at this stage we are pretty

Re: Topband: Connector installation on flooded cable

On Fri, 20 Jul 2012 08:15:28 -0400 N1BUG p...@n1bug.com wrote: I am replacing the coax in my Beverage system and have a dumb question. When using flooded cable and compression F connectors, is it necessary to clean the goo off the stripped cable Paul, I live near salt water in a very

Re: Topband: The use of digital modes on 160 metres

On Wed, 19 Sep 2012 08:33:28 -0400 Tom W8JI w...@w8ji.com wrote: That's a good suggestion. It really should be one award for the case where a human operator copies the signal, a man and his radio, and another certificate where a machine actually copies the signal, a man reading the text

Re: Topband: Fishing beacons redux

G'Day Topbanders, These beacons are not frequency agile. As Mike points out, they are on a schedule. The entire environment they are used in is pretty primitive. They certainly do not know morse code, the beacons are pre-programmed and the fishermen just turn them on or off (and recharge the

Topband: PT0S DXpedition

G'Day Topbanders, The PT0S DXpedition is scheduled to sail for St. Peter and St. Paul Rocks the evening of Nov 05 (maybe early Nov 06 because of weather). We expect to arrive on the rocks the morning of Nov 09. The first to go up will be the 160 m station, which we hope to get on the air

Topband: PT0S DXpedition

G'Day Topbanders, The PT0S DXpedition is scheduled to sail for St. Peter and St. Paul Rocks the evening of Nov 05 (maybe early Nov 06 because of weather). We expect to arrive on the rocks the morning of Nov 09. The first to go up will be the 160 m station, which we hope to get on the air

Topband: PT0S TB Summary

G'Day Topbanders, Here are some of the 160 m aspects of the PT0S operation that may of interest to those on this reflector. Our TB TX antenna (and RX for the first 2 nights) was an inverted L located on top of a rocky outcropping that jutted into the sea, about 8 meters (25 feet) above the

Topband: Patience in ARRL 160 Contest -- copying weak ones

After spending 12 nights-in-a-row straining to hear and assemble thousands of weak calls, I would cautiously agree with Herb: if the DX clearly has the prefix, just send the missing letters. Maybe it is mental, maybe something else, but time and again I heard clearly (almost loud) the

Re: Topband: problems with RFID-key-cards / transponder door locks in Hotels ?

Tom, The technology you are talking about is called NFC, Near Field Communications. It uses the magnetic (H) part of the RF radiation -- near field -- but it does have an electric component, although that is quite weak. The antenna, both in the lock and in the card, is usually a multi-turn

Re: Topband: Problems with my DX Engineering RTR-1 receive antenna switch

On Tue, 25 Jun 2013 20:22:45 -0400 Mark Lunday mlun...@nc.rr.com wrote: I am wondering what other folks do for their receive antennas to protect their rigs. Mark, I always add the following to my RX System: (Loop or Beverage) Use an isolation transformer. I add a relay at the tranformer's

Re: Topband: Insulator problems- Notr og caution

On Mon, 16 Dec 2013 14:32:41 -0500 Charlie Cunningham charlie-cunning...@nc.rr.com wrote: Many black plastics are blackened by the addition of carbon black that can make them rather lossy at RF! Been there, done that in my work - at 900 MHz. I have been using 3 black Derlin

Re: Topband: KP1

Topbanders, Rest assured that there will be a substantial 160 m operation from KP1. I am planning and building the low band antennas and gear right now. We will be releasing more details later. George, AA7JV KP1-5 Project Team Member On Wed, 22 Oct 2014 15:10:35 -0500 garyk9gs

Re: Topband: K1N 5,399 q's on 160 M

Jon, I was one of the 160 m operators. NA callers were thick during the evening hours when they were competing with EU, making for some difficult pile-ups, but after midnight (and EU sunrise), often there were very few NA callers. George AA7JV On Tue, 17 Feb 2015 22:57:38 + jon

Re: Topband: Boradband noise on 160 meters tracked down to apartment complex

Don, I have referred to VFD-s in an early posting as RF Weapons of Mass-Destruction. Still, they are useful and I got one in my house. As the contractor in your description did, I installed a line filter on the input side. I also installed a three wire common mode choke on the three phase

Re: Topband: Low noise preamp suggestions?

Robert, Gary, KD9SV, has designed an amplifier specifically for these low gain RX antennas. It is being sold by DXengineering. George, AA7JV On Mon, 2 Nov 2015 22:54:54 -0800 Robert Fanfant wrote: I’ve have built another TX3A.com DHDL antenna and am in search of a

Topband: Clean AC Power

Hello Top-Banders, Today's Wall Street Journal had an article on serious (fanatical) audiophiles in Japan who have their own utility poles (and transformers) installed to ensure that they get the cleanest AC power possible. I had a bit of a chuckle ... but then I thought, wait a minute,

Topband: Topband Dinner at Dayton

Who is organizing the TB dinner this year? TKS, George AA7JV _ Topband Reflector Archives - http://www.contesting.com/_topband