Wayne, I use an ISOBAR IB-4 dual stage line filter. It is a combination noise and surge protector. I don't have any literature for it, but a similiar filter is shown at: http://www.tripplite.com/en/p
The Isobar filter that I have has individual Toroid filters on each line inside the metal box. Additional Toriod filters are between the stage 1 and stage 2 outlets. Both the hot and common lines are
Ditto here. I have no connection, but "Dropbox" is an excellent way to post your pictures/manuals etc and provide a link for those that want the info. With astute file management, the freebie version
Try "Reply to all". works for me (Outlook) 73s de Jim W5IFP _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting
Rick, I have had good results using inverted V and slopers off the tower. I placed insulators in my upper guy wires and feed them with a single 50 ohm coax at the top apex. The shield is bonded to th
In addition, Aggregate finish has Pea Gravel in the top instead of crushed rock. Sometimes they use regular cement, work Pea gravel into the top layer and then brush it off. Colored Pea gravel gives
Felipe, I sent you a copy direct. Please let me know if you get it ok. Hopefully it is the version you are looking for. 73s de Jim W5IFP _______________________________________________ ______________
Eric, A few years ago, I had an electrostatic burst and it took out the MAX 232 and the voltage regulator. The controller was off and the antenna disconnected. But the surge was so close it sounded l
Michael, I have had good success by mounting a 9 element 440 beam 5 ft above my TH6 and a 14el 2m beam 5 ft above the 440 beam. I also have a tri-band J-Pole (440/220/144) mounted about 2 foot above
Jerry, I have a lot of rocky limestone here at my QTH. It may be a little softer than your terrain. I use a small electric Jack Hammer. I would suggest you try that approach before you buy something.
I'll add another tid bit on RFI source. Many Gensets use an SCR based battery charger. These are extremely noisy. This is especially true with power control panels used in older motorhomes and smalle
Doug, i have a homebrewed kludge. I have a Prop Pitch rotor mounted about 4 ft from the bottom of my 50Ft. tower. On the top is a TH6 about 4 ft above the tip of the tower. 10 ft above that is a 14 e
Loading is not an issue with Prop Pitch rotors. I chose the cable suspension because its easy to fabricate and does not require any thrust bearings. The original Prop drive gear contains a spline dr
white schedule 40 PVC pipe outside suffers from the same problem. Prime the outside of the PVC and give it a liberal coat of External Alkyd paint and it greatly reduce deterioration. I have 3 white P
Although perhaps not as efficient as the SteppIR, consider a mobile Screwdriver antenna. It should work fine mounted on the balcony railing. Then you can use it on your truck also. Do some Due Dileng
I have a mobile antenna that uses a similar coil. It is a single center load but has 2 coils inside. It is setup the same configuration as the RV-3C. It covers 10/15/20m. It is approx. 8 ft. tall I h
Tom, Have you replaced the 1N34 diodes? Does the forward power meter change or just the reflected meter. 73, Jim w5ifp@gvtc.com _______________________________________________ _______________________
Wikipedia says: == "An antenna "rotator" is a device which is used to change the orientation of a directional antenna" "The "rotor" is a moving component of an electromagnetic system............." ==
I'll ditto this one. I have a TV rotator mounted horizontal in the middle of a 14 element 2 meter beam. I use it vertical for FM and horizontal for SSB. Mine must be a "rotating rotor" since it is mo
Another consideration: As you increase the apex angle, the feed impedance will increase and the radiation pattern will no longer be Omni-directional. A Mismatch can result in offsetting any expected