220 MHz Base Ham Antenna

Description

220 MHz
Base Antenna – Ham Band
This is a 220-225 MHz base antenna designed specifically for the 220 MHz ham band.
It is a J-pole type design and thus does not need radials or a ground.
I have my students build these in addition to our dual band and UHF antennas.
I have been an instructor at the Univ. of California since 1998 (formally at Berkeley and now at Santa Cruz-Silicon Valley) teaching primarily graduate course in wireless communications.
Each antenna is custom built and tuned to your requested frequency by me or my graduate students.
For general HAM use, a center frequency of 223.5 (222-225MHz) MHz is adequate.
You can also custom order for the 219-220 MHz band.
There is no charge for custom tuning.
Connector choices are SO-239 (aka female PL259)
or N  ( extra) connector.
We can send you a PDF copy of the numerous articles and patents we have on these antennas.
Product Description:
-
48 inches tall
-
Frequency range 220-225 MHz
(buyer must specify desired transmit frequency)
Antenna is good for 5 MHz bandwidth.
-
Impedance: 50 ohms
-
Maximum power – 75 watts
-
UHF female (SO-239) default  or N connector
This antenna is complete with exception of the 4 feet of ¾ inch Class 200 PVC pipe needed for the antenna.  Individual shipping of the 4 ft antenna is so we rather you go to Lowe’s (stock # 23990)  or Orchard Supply (stock # 648-5908) or Menard (SKU #6899684) and buy the PVC pipe for about .  If you cannot find the PVC pipe, I can ship the antenna with the PVC pipe.  Please email me if you need me to send the antenna with the PVC pipe.
The antenna has a lifetime warranty.  Just return it and it will be either repaired or a new one sent to you or 100% refund (buyer choice, no questions asked).
Please email me via ebay and I will gladly answer any questions.
73’s  Ed Fong WB6IQN