You're not really concerned about wind load - more about overturning moment for the base. You can calculate the overturning force for each section of the vertical by using length x diameter (both in
G0KSC has several free six meter OWA designs on his web page: <http://www.g0ksc.co.uk/50mhz-owa-yagis.html>. Justin's designs should be easy to build at home and perform to the model without tweaking
The pricier RigExpert devices appear to be VNA type analyzers that incorporate "real" (i.e. selective) receivers and which would be immune to out of band interference. VNA type analyzers *still have
Jim, The problem is that, in that application, the cables must be 1/4 wave long electrically. That already makes them shorter than desired and "wound" chokes on each end would shorten them by another
Which would, in turn, reduce the bandwidth of the cables by a factor of three and similarly increase losses in the cables which operate at significant SWR both of which would negatively impact operat
Wrong. The criteria on 60 meters is expressed in ERP. See 97.313(i): (i) No station may transmit with an effective radiated power (ERP) exceeding 100 W PEP on the 60 m band. For the purpose of compu
If they're Flex rigs do they have internal preselectors and are the preselectors engaged when you experience the "interference". Without preselection, the *fundamental* one or more bands away can ove
On 10/21/2016 7:42 PM, Don W7WLL wrote: I've a dismantled TET setting out back on some sawhorses that I've saved for something (have not figured out what yet) and the first two pictures of the antenn
Yes, Force 12 has done it for years. The C3 series of antennas are overlaid 2 elements for 20/15/10 meters with parasitic coupling from the 20 meter DE to the 10 and 15 meter DEs. The general concept
That is known as a capacitor start - capacitor run motor. The capacitor provides a phase shift between the two windings to control the director the motor runs. Hy-Gain (CDE) rotators also use capacit
Same with my [old] iPhone 5se. The app Commander Compass is outstanding on the IOS platform ... allows the user to select magnetic or true north and allows overlaying the compass on the users' choice
Why do you want to stack another 10 meter antenna above the MP33warc+40? The MP33warc+40 already covers 10 meters. A separate 10 meter monoband antenna and the MP33warc+40 would certainly have detrim
However, having run HFTA on my "flat" QTH in Florida (a state that is flatter than Kansas - see the references) you would be surprised at the effects of even modest changes in heights. 73, ... Joe, W
California is always out in left field. Years ago in Ohio, my antennas and towers were covered without question as "auxiliary structures" - no different than the barn, detached garage and summer kitc
Right from Hy-gain: <http://www.hy-gain.com/Downloads/index.php?productid=AV-18HTJR&filename=20160826_162818_AV-18HTJR.pdf&company=hygain> 73, ... Joe, W4TV On 2/20/2017 8:19 AM, Frank Davis wrote: W
I would not recommend the Carolina Windom as I had one literally fall apart due to UV degradation of the PVC DMU (feedpoint) housing here in Florida. Look for a product with a QUALITY *balanced* comm
I think the term Carolina Windom was given as a cute name in Carolina Windom is a registered trademark of RadioWorks: www.radioworks.com The antenna has been often copied but in any case my antenna
I'm using an Ambient Weather WS-1001-WiFi ... the sensor package using 915 MHz to the base station/console and the console will link on-line to several of the data server/aggregators using my existin
*ALL* snap-ons are inferior to similarly sized "solid" toroids. The split reduces the ability of the magnetic flux to move through the core because the gap at even the most highly polished split(s).
On 6/21/2017 2:08 PM, john@kk9a.com wrote: I do not like trapping in water with end caps so perhaps you can fasten the rope using a cable tie. If you are going to use a cable tie, cover it with two o