The Alpha End Fed Sr is a 10-160 meter HF End Fed antenna that is 60 feet in length, which is nicknamed the JPole Jr due to its 2 parallel elements. Use a tuner to achieve a near perfect SWR on these bands, with limited efficiency on 160 meters.
Specifications
- Weight: 1 pound
- Configuration: End-fed antenna configurable as Sloped or Horizontal
- Frequency Coverage: 1.8-29.7 MHz (160-10 Meters)
- Peak Power: 250 PEP SSB, 125 CW, or 25 watts for digital modes. NOTE – The MIL-STD-188 M110a digital communications mode is rated at bursts of 100 watts digital for up to 1 minute using the MIL-STD Data Modem Terminal (MS-DMT) and Automated Message Terminal (AMT) software applications.
- Length: 60 Feet
- Connector: UHF type SO-239
Analysis
60 Foot element | |
Band | SWR |
10 Meters | 1.61 |
12 Meters | 2.43 |
15 Meters | 1.75 |
17 Meters | 1.52 |
20 Meters | 2.20 |
40 Meters | 2.67 |
80 Meters | 2.08 |
Deployment Recommendations
Run the antenna as a sloped system for good NVIS and DX results, or a flat top for good NVIS results. We test the antennas at 6 feet, however higher placement will enhance DX results while lower placement will enhance NVIS.
WA7KJ Customer Photo
We are dedicated to improving all of our antennas. Specifications and descriptions are subject to change without notice.
It’s an excellent antenna. I will use it at field day and pota. Wish that I could use it at my home. My mistake. I need the shorter one th fit in my townhouse property.
Thanks for a great product.
I can tune the antenna from 160m to 10m so it does what it says it will do. Also works well on UK 5 MHz allocation. Well made and prompt delivery to UK.
Great signal to noise ratio compared to other wire antennas