Topband: Desecheo 1979

2013-11-21 Thread Dave Novoa W4DN
The first state-side QSO on 160 from Desecheo (KP4AM/D) (after a couple of Caribbean stations) was with K4IEX on March 5 at 0256 on CW. Then followed W4DR, W2QD, N4WW, W6RW, W8LRL, AA4V, K3VA and W4PZV. Number 22 down the same log page was none other that W1BB. The first Canadian was VE3BMV

Re: Topband: Verifying integrity of 75 ohm coax.

2013-11-21 Thread Bill Wichers
That sounds like no-ox on DC plant connections. You'll find after years and years that the copper will still be shiny and new looking in the grease-protected areas. The idea is to keep out oxygen so that the connection doesn't corrode since the corrosion is what increases the resistance.

Re: Topband: Desecheo 1979

2013-11-21 Thread Dave Novoa W4DN
Herb, N0VA/KP2 is also in the log. Dave _ Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Verifying integrity of 75 ohm coax.

2013-11-21 Thread Tom W8JI
Helpful advice, Tom. Thanks. I've always worried about using silcone grease on connectors. I understand it helps seal the connector, but my fear is that it could interfere with the electrical bond. On the face of it, getting non-conducting grease on, e.g., the center terminal of an

Topband: Fw: Verifying integrity of 75 ohm coax.

2013-11-21 Thread HAROLD SMITH JR
I worked for many years in the Xray service business. We use silicone grease in the plug in Anode and Cathode plugs. If  the connectors were not coated with silicone grease, The connectors would  explode. The cathode connector had 1/2 the tube voltage and the filament voltage.  The filament

Topband: RG8X

2013-11-21 Thread DnEMoth
On 160/80 meters how much RF power can RG8X coax safely handle and is 8 or 10 turns on a 6 diameter piece of PVC pipe sufficient for a feed line choke. Run is about sixty feet long. _ Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: RG8X

2013-11-21 Thread Mike Waters
RG8X can handle more than the legal limit on 160. I think you would be better off with a ferrite core choke. Look at http://www.karinya.net/g3txq/chokes . The choke we use is described (and photo) at http://www.w0btu.com/160_meters.html#inv-l_antenna 73, Mike www.w0btu.com On Fri, Nov 22, 2013

Re: Topband: RG8X

2013-11-21 Thread Jim Brown
On 11/21/2013 11:05 PM, Mike Waters wrote: I think you would be better off with a ferrite core choke. Yes. Also see the Choke Cookbook in k9yc.com/RFI-Ham.pdf 16 turns of a 4 ft length of two parallel #12 THHN conductors connected as a section of parallel wire line makes an excellent choke

Re: Topband: RG8X

2013-11-21 Thread Mike Waters
I almost put a link to your info in my previous e-mail, Jim. That's where I got the info to build the choke I use. 73, Mike www.w0btu.com On Fri, Nov 22, 2013 at 1:16 AM, Jim Brown j...@audiosystemsgroup.comwrote: On 11/21/2013 11:05 PM, Mike Waters wrote: I think you would be better off