Using you analogy, substitute a 50-ohm dummy load and call it an "antenna". Very little power will be lost in the "cable" and all the power will be radiated by the "antenna". The dummy load isn't res
Resonance, in the normal sense has nothing to do with the value of impedance only in a minimum (for a series tuned configuration) or maximum (parallel tuned). While its possible to make the argument
And you can get 12" x 8" x 8" NEMA 4 steel enclosures off the "e" place stores for $40 shipped. I've bought several in different sizes with no fuss. 73 de Perry - K4PWO ______________________________
Just flipping the balun might not work as the Hi-Z side is balanced and the Lo-Z side is unbalanced. Just the reverse of what he probably needs. 73 de Perry - K4PWO __________________________________
I wonder if anyone has a schematic for a TIC EC2 2700 controller. This is an early PC compatible "digital" controller that still had the analog meter for direction. I looks like a 2100 type box but h
True, but flipping the balun would unbalance the intended balanced side due to the ground reference point. I said "might not" because I didn't know his antenna feedpoint configuration. My pet peeve i
More like ANFO... 73 de Perry - K4PWO _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.cont
But Norm's Fabrication beats Rohn dealers on quality and price for rotor plates, base plates, torque arms, etc. (Rohn 25 rotor plate is $40 plus $20 shipping, $10 more gets stainless hardware) http:/
Another source for aluminum.... your local awning supply house. If you have a commercial/residential awning shop located near you, they may have the tubing you're looking for or be able to order it f
You can use a 12-volt battery to apply power to the rotor motor to see if it moves. The polarity controls direction so make sure the rotor isn't against a stop. I've used a rechargeable drill's power
I'm thinking of getting one as well The manual is on the Yaesu Web site and it has a controller schematic in the back (I can e-mail the PDF file if you don't find it). Pretty straight forward circuit
I've used it on HF and 6 meters with no problems. It is the typical stiff (almost like hardline) cable that is hard to work with but it does work well. I haven't used it for 2 meter or higher yet but
If the antenna is like I think, he's looking for the white fiberglass "radome" that goes over the guts of the antenna. The fiberglass is in three sections with chrome threaded couplers about every 6
R&L Electronics has the NJC-207-PF connectors for $20 each. See... http://www.randl.com/cgi-local/cart/cart.cgi?cart=ai&ID=39808 73 de Perry - K4PWO _______________________________________________ __
Not if you are in the non-EU area of the world. At a $1.41 to each Euro, it can get expensive. R&L is the lowest cost I've found in the US for the connectors. 73 de Perry - K4PWO ____________________
Clamp type LMR600 "N" connector... http://www.l-com.com/item.aspx?id=21012 Crimp type LMR600 "N" connector... http://www.l-com.com/item.aspx?id=21005 73 de Perry - K4PWO _____________________________
I have used some of Shireen's LMR-400 clone coax on HF and VHF and it was fine. However, the batch I got about 3 years ago had a "pure" copper center conductor. The current coax has the typical coppe
For repeatable bends, I believe it is more like a 6" minimum radius. Most LMR type cables use a copper flashed aluminum inner conductor. Aluminum will work harden and stress crack from repeat bending
Yep, the hum is because it doesn't know the words... yuk, yuk. Actually your memory is correct, you have bad starting capacitors in the control units. As I recall, it is about a 6-8 mfd. non-polarize
The grommet is to weather proof the connector. If you have the "knife edge" type shield retaining washer (where the grommet fits over the "knife" edge), you will find that the grommet is split into t