Dual Band J Pole Copper Cactus / Listed under the antennas/vhf uhf category that is about antennas for vhf uhf bands.. I built one of these myself and seems to work quit well. A balun is necessary because a j pole antenna uses a balanced feed the. It does not require a ground plane for operation, but it is firmly recommended that the antenna should be mounted on a well grounded metal pole. I built one of these myself and seems to work quit well. Start date feb 9, 2007.
From wikipedia, the free encyclopedia. This is a very easy and simple 2 meter/70cm vertical antenna. A balun is necessary because a j pole antenna uses a balanced feed the. How to make your own copper cactus j pole antenna for amateur radio. While all the designs performed.
This will provide some protection in the event of a lightning strike. It does not require a ground plane for operation, but it is firmly recommended that the antenna should be mounted on a well grounded metal pole. A balun is necessary because a j pole antenna uses a balanced feed the. Using 50w i frequently worked repeaters across lake michigan or to however, if you follow the dimensions in this article you will have a j that should exhibit less than 1.5:1 vswr across the 2m band and under 3.0:1 across 70cm. You can either feed it with separate coax's for each band or a single coax, however, separate coax's make it. Find many great new & used options and get the best deals for 2 meter dual band collapsible copper j pole antenna i had cliff set my j pole to the center of the old commercial band for me and figured it would have just a little bit higher swr on ham 2 meter and 70 cm than it would normally be. Start date feb 9, 2007. I wanted something a little more substantial, though, for when operating at my primary/secondary qths.
It probably adds some inductance which could explain why.
5 видео 783 просмотра обновлен 9 июл. I do have a discone outside for one, but after finding this forum, i thought that i might build something. I built one of these myself and seems to work quit well. The copper cactus j pole antenna design is a simple amateur radio antenna model that will allow you to operate both bands with good performance it dual band j pole. After the holes are drilled, file the opening flat for a better band clamp fit. Jump to navigation jump to search. Using 50w i frequently worked repeaters across lake michigan or to however, if you follow the dimensions in this article you will have a j that should exhibit less than 1.5:1 vswr across the 2m band and under 3.0:1 across 70cm. From wikipedia, the free encyclopedia. I built one of these myself and seems to work quit well. Any recommendations to a new tech for a good vhf/uhf antenna for a ham shack. It does not require a ground plane for operation, but it is firmly recommended that the antenna should be mounted on a well grounded metal pole. This is a very easy and simple 2 meter/70cm vertical antenna. The copper cactus antenna to:
It does not require a ground plane for operation, but it is firmly recommended that the antenna should be mounted on a well grounded metal pole. From wikipedia, the free encyclopedia. Any recommendations to a new tech for a good vhf/uhf antenna for a ham shack. You can either feed it with separate coax's for each band or a single coax, however, separate coax's make it. This is a very easy and simple 2 meter/70cm vertical antenna.
From wikipedia, the free encyclopedia. Any recommendations to a new tech for a good vhf/uhf antenna for a ham shack. A balun is necessary because a j pole antenna uses a balanced feed the. While all the designs performed. Start date feb 9, 2007. Jump to navigation jump to search. The antenna is a dual j pole design, and has a common driven element for both bands. Listed under the antennas/vhf uhf category that is about antennas for vhf uhf bands.
This is a very easy and simple 2 meter/70cm vertical antenna.
Copper cactus dual band super j pole antenna project 2 meter 70 cm home brew antenna. I do have a discone outside for one, but after finding this forum, i thought that i might build something. Jump to navigation jump to search. I built one of these myself and seems to work quit well. This will provide some protection in the event of a lightning strike. After the holes are drilled, file the opening flat for a better band clamp fit. Dcx, i have made a couple of copper cactus antennas and they work pretty well when they are set up correctly. Any recommendations to a new tech for a good vhf/uhf antenna for a ham shack. Antenna jpole links → 93. I wanted something a little more substantial, though, for when operating at my primary/secondary qths. The gain and pattern are the same as with a normal vertical dipole. Using 50w i frequently worked repeaters across lake michigan or to however, if you follow the dimensions in this article you will have a j that should exhibit less than 1.5:1 vswr across the 2m band and under 3.0:1 across 70cm. This is a very easy and simple 2 meter/70cm vertical antenna.
The antenna is a dual j pole design, and has a common driven element for both bands. This will provide some protection in the event of a lightning strike. Listed under the antennas/vhf uhf category that is about antennas for vhf uhf bands. The copper cactus antenna to: The radiation pattern is that of a half wave antenna and is symmetrical and doesn't need a counterpoise to work.
I built one of these myself and seems to work quit well. From wikipedia, the free encyclopedia. It does not require a ground plane for operation, but it is firmly recommended that the antenna should be mounted on a well grounded metal pole. It probably adds some inductance which could explain why. Antenna jpole links → 93. The copper cactus j pole antenna design is a simple amateur radio antenna model that will allow you to operate both bands with good performance it dual band j pole. I do have a discone outside for one, but after finding this forum, i thought that i might build something. The gain and pattern are the same as with a normal vertical dipole.
What i did was use hose clamps until i got the sw correct and then.
From wikipedia, the free encyclopedia. How to make your own copper cactus j pole antenna for amateur radio. Copper cactus dual band super j pole antenna project 2 meter 70 cm home brew antenna. I do have a discone outside for one, but after finding this forum, i thought that i might build something. This is a very easy and simple 2 meter/70cm vertical antenna. Start date feb 9, 2007. What i did was use hose clamps until i got the sw correct and then. The copper cactus j pole antenna design is a simple amateur radio antenna model that will allow you to operate both bands with good performance it dual band j pole. A dual band j pole had been in the back of my mind for a number of years, the simplicity of this design and the fact that it was ground independent, that is requiring no ground plan radials made the j pole the choice. This will provide some protection in the event of a lightning strike. While all the designs performed. This is a very easy and simple 2 meter/70cm vertical antenna. Using 50w i frequently worked repeaters across lake michigan or to however, if you follow the dimensions in this article you will have a j that should exhibit less than 1.5:1 vswr across the 2m band and under 3.0:1 across 70cm.