The CHA WINDOM 40 antenna is designed for 40m, 20m & 10m. A tuner may be needed to tune the other bands between 80M and 6M. Power handling is 250W SSB. Built with the portable user in mind. Very light weight. Does not require an antenna tuner under normal circumstances. SWR is < 2:0 (Typically a 1:3 to 1:6 ) at about 35′ to 45′. The antenna SWR is influenced by the balun elevation, wires angle, feed-line length and structures proximity.
The following SWR chart shows the SWR curves of the CHA WINDOM 40 elevated at about 10′ of elevation and installed in an inverted “V” configuration. A RigExpert AA-520 and a 50′ long RG-8X coax cable were used. The SWR will be influenced by the antenna elevation, the angle between the two legs and by the coax length and type.
Antenna total length is 66′. Antenna wire elements are #16 proprietary stranded wire (short side is 22′ (6.7m) long and longer side is 44′ (13.4m) long). Built with a 5:1 250W SSB balun mounted on a polycarbonate plate. A 10’ of paracord 550 has been added at each ends of the antenna and another 20’ to secure the balun.
Frequency: 6M – 40M
Power: 100W CW or 250W SSB
RF Connection: SO-239
The antenna system consists of:
1 X CHA WINDOM 40
1 X ANTENNA PORTABLE POUCH
The “RST” stations will take to the airwaves in February and March from several locations in Alaska, Yukon Territory, Northwest Territories, and Nunavut, with members of the North Country DX Association (NCDXA) at the helm. All call signs w... Read more
The Wireless Institute of Australia (WIA) reports Australia’s communications regulator ACMA is reinstating the reciprocal arrangement for US Amateur R... Read more
““From 14 till 18 may me and 2 members of OSA will activate Jersey island (EU-013).We will use a TS-2000 with FD4 and some other dipoles working... Read more
HF 8 band Fan dipole multiband antenna 160-6 meters with Balun Product Description The 5 element fan dipole works very well at covering all the bands... Read more
Solar Flux Hits New High & Big Flares Possible Now | Space Weather News 11.26.2020 Read more