You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
A Winner has been selected for the 2025 Radioddity Cyber Monday giveaway! Click Here to see who won!
Ok, I must admit, This discussion has had me doing some research......Gotta love ham radio!!!!
The following is a quote from the ARRL antenna hand book, and is sited on several sites around the net.
"As the included angle of the inverted vee becomes smaller the two radiators interfere...
W5LZ I understand why people argue the polarization of an inverted V, But fact is, the antenna is vertically polarized, But not omni directional. It presents lobes off the broad sides of the antenna. Here is a decent read on the subject
Radio Antenna Engineering - Traveling-wave Antenna for...
The problem with verticals is having enough space for the radial field. You want at least a 1/4 wavelength radial field on the lowest freq operated. So on 160meters, you will need a radial field that stretches out 131 feet in all directions from the base of the vertical element.
Thats alot of...
Just wanting to see how much people have put on these towers. I know the specs are not all that impresive and the biggest issue is long beams "torquing" the tower, but I am interested to know what you have on yours.
PICS ARE BEST
I have a mint ICOM 746PRO with matching power supply, hand mic, service schematics, manual and original box.
Im asking $1100 Shipped
Would consider partial/full trades of 160 meter capable HF amplifier, TS480HX (keep in mind Im gonna buy a friends for $600 so you must be willing to add about...
First ensure the supply voltage is 13.8 and not 15 or so......
Check R219, VR11, and R218, for proper value. Verify with an ohm meter. Preferably out of circuit, but not needed to be. If either of these were too low in value, that would cause excess bias voltage and added current.
Since...
On a second thought as well. Check the negative DC input. If your radio is relying on the ground through the coax, its likely that ground is not a very good one. see if radio turns off when you remove the coax. So the static shock you deliver to the case could momentarily raise the entire ground...
I would say check the grounds on the ta7222 audio amp. Its possible that you have enough static charge that if one of the grounds is loose, the static charge is popping the audio amp and its droping the gain a result. Radio cools down and the connection is fine until the next arc creates a high...
I bought this amplifier to do some testing for a friend. I did remove 2 capacitors and replace place them with lower value capacitors. The reason for this was to allow for lower drive and still retain a decent output. After testing for a couple hours using my FT817, I put the original capacitors...
This forum does not allow a single user to have more than one username. If anyone wants to change their username contact an admin and it will be done. Multiple accounts belonging to the same member will be deleted without warning.