See my article on Simple Elevated GP Antennas in QST for JUNE 1994 or any subsequent ARRL Handbook. Tom N4KG ________________________________________________________________ Sign Up for Juno Platinum
YES YOU DO ! (have the test equipment to determine it experimentally) Connect your amplifier and antenna to the switch. Connect a Wattmeter (or RF millivoltmeter) and Dummyload to the 'other radio' p
Actually, Rohn manufactures 5 different types of "pointy top" sections plus the "flat top" section. See the Rohn catalog for details, including the PIPE Diameter at the Top which range from 2.0 to 2.
See my article on Simple Elevated GP Antennas in QST for JUNE 1994 or any subsequent ARRL Handbook. Tom N4KG ________________________________________________________________ Sign Up for Juno Platinum
Hi Tom, I would start by removing the Capacity Hats, then slide the element tips in until you obtain resonance at the desired frequency. Tune the reflector to be 3 to 5% long. You can grid dip the re
A better solution is to Gamma Match the boom of a High Band Yagi or Tribander as a rotary dipole on 30M (or 40M). I have posted the technique I used on a 3L20 and TH6 on this reflector several times
The F12 suggestion works fine IF the parasitic element can be SPLIT in the middle. The CC Reflector is CONTINUOUS at the center. I suppose one could tune the DE as a reflector, then use THOSE dimensi
extreme I once removed a TH6 whose Boom To Mast plate cover was severely bent following an ICE storm and the failure of the Truss Wires. Tom N4KG _____________________________________________________
How about using a RELAY to ground the coax shield to the tower when you want to use the sloper and OPEN when you want to use the LPDA? You could mount a panel barrel connector on an insulated piece o
How about using a RELAY to ground the coax shield to the tower when you want to use the sloper and OPEN when you want to use the LPDA? You could mount a panel barrel connector on an insulated piece o
N4KG comment and question below. SNIP ................... I have 7 towers, ranging in height from 40 ft to 140 ft. To the best of my knowledge, I have NEVER taken a direct lightning strike. OTOH, I H
Do you have an Antenna Analyzer to measure the feed IMPEDANCE? My guess is the Resistive component is LESS THAN 50 ohms which is typical for verticals, especially short loaded verticals. Use and OMEG
Do you have an Antenna Analyzer to measure the feed IMPEDANCE? My guess is the Resistive component is LESS THAN 50 ohms which is typical for verticals, especially short loaded verticals. Use and OMEG
Gang, Antenna mart products can be obtained from the following two Atlanta area dealers/distributors: Max-Gain Systems, Inc. Allen Bond, WB4GNT 221 Greencrest Court Marietta, GA 30068 770-973-8251 FA
I would recommend placing the low beam at 40 to 45 ft which will put the maximum radiation right in the middle of the NULLS of the higher beam and provide coverage of ALL the higher angles supported
Out of curiosity, WHY do you want to replace your coax? Did you measure it's loss to see if it is in spec? How LONG is the coax? (How much Total Loss at 10M?) I probably would NOT replace any coax un
I'd hate to fall with only ONE side of a lanyard connected on one side at the hip. Sounds like a good way to break one's back. A climbing safety rule I recall is to "Always maintain 3 points of conta
On Tue, 17 Dec 2002 15:23:28 -0800 "Thomas Miller" <ac5tm@bellsouth.net> writes: I hope you have enough LIABILITY INSURANCE ! Tom N4KG ________________________________________________________________
To: <towertalk@contesting.com> SNIP SNIP Now where have we heard THAT * before? * (Higher is NOT always Better) Tom N4KG ________________________________________________________________ Sign Up for
Pete, My 402CD survived estimated 80-90 MPH winds from a small tornado. I reinforced (double walled) the first section of each half element. I also put 6 inch wooden dowels in each end and a 12 inch