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Latest Topics

Topic Created Posts Views Last Activity
malware,ect SSTV software Yesterday, 17:47 1 7 17 hours, 57 minutes ago
home built 300 or 450 ohm Yesterday, 17:41 2 15 17 hours, 24 minutes ago
All U Lucky Bird Op's Oct 31st 2014, 17:37 1 450 on 10/11/14
15m 3/4wave portable gives10m-40m Jul 25th 2014, 21:40 1 318 on 25/7/14
two db-224A's on a repeater tower question Jul 13th 2014, 01:23 4 402 on 14/7/14
"Hindrances" examples Feb 6th 2014, 21:17 1 562 on 6/2/14
Longwire 600 ohm terminating resistor HB Aug 5th 2012, 22:23 2 1,282 on 6/8/12
using 2-160M loop fed by the same feedline Jul 24th 2012, 21:22 1 1,083 on 24/7/12
50.290 psk-31 Jun 3rd 2012, 15:06 1 1,827 on 3/6/12
6m SSB w/300 ohm feedline and a TV balun Mar 2nd 2012, 01:29 1 1,140 on 2/3/12

Latest Posts

Topic Author Posted On
malware,ect SSTV software N0MZR 17 hours, 57 minutes ago
We have attempted on several occasions to download SSTV software online. Each time , our security program quarantines the files and prevents a successful download. Are there any safe SSTV programs obtainable?
home built 300 or 450 ohm N0MZR 18 hours, 3 minutes ago
We stumbled onto several rolls of common CATV coax with wire shield and want to build 300 ohm and 450 ohm line with it. This feed line will be inside a steel building with 48 feet to the exit of the feed line .With velocity factor and db losses as common coax use , can we convert this stuff to shielded 300 or 450ohm and expect the same performance as what is sold on the shelves ? We are using it on 160m , 80m , and 40m sky loops.
Tuning a antron 99 ant to ten meters bearclaw53 on 30/12/14
I use the Solarcon A-99 for weak signal digital on 10m,12m,15m, and 17m. I also have used a tuner at 20m with this antenna. I would not cut the antenna . I would use the tuning rings and leave the length intact. Simple hook up the swr meter and raise or lower the rings. It seems broad banded enough if you leave it intact. This way you have addition bands without destroying the antenna. I tuned mine to 12m and it work well.
All U Lucky Bird Op's N0MZR on 31/10/14
I live in en22ha and the entire portion of the satellite band on 2m is ruined by trucking companies, farmers and custom field services. Feel lucky you do not live in Iowa.Where all your work setting up has been spoiled by unlicensed users. Besides business farm operations on 145.945 , 145.835 and145.845, even the Experimental portion is being invaded. Enjoy while you can !
15m 3/4wave portable gives10m-40m N0MZR on 25/7/14
Portable antennas for camping seem to be a problem for many in my area. Here is what I use. I cut a vertical for 15m ssb phone to 3/4 wave or 32ft. 11in . My radials are 4 ea. at 32ft. 4in. Attached to a base of your choice and fed with 50 ohm coax About 50 ft . On 10m good low angle propagation is acceptable for DX. On 40m you have a 1/4 wave. On 20m it approximates a half wave. Or CW 15m 3/4 wave cut to 33 ft. 3 in. This is a quick one wire up a tree (with my fishing rod and a sinker of adequate weight to fall thru the tree) and 3-4 radials on the ground.(put black tape over one end of each radial . I also use a antenna tuner to extend my other band travels to check in on the 3.970 net. Its simple and often overlooked. This made me a happy camper.

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