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.
Specifications:
Frequency: 6M – 40M
Power: 100W CW or 250W SSB
RF Connection: SO-239
Weight: TBA
The antenna system consists of:
1 X CHA WINDOM 40
1 X ANTENNA PORTABLE POUCH
$165.00
More
![December of the CQ DL printed [ VIDEO ]](https://qrznow.com/wp-content/uploads/2018/11/CQDL-90x60.jpg)
![CQ DX Zones of the World – [HQ] – Download](https://qrznow.com/wp-content/uploads/2015/04/cq_zone_map-90x60.jpg)
More
ARRL Contest and DXCC Rules Now Prohibit Automated Contacts
Following the direction of the ARRL Board of Directors, ARRL has incorporated changes to the rules for all ARRL-sponsored contests and DXCC, prohibiti... Read more
Icom IC-2730A vs IC-2720
Ray Novak and George Thomas compare the IC-2730A to it’s predecessor, the IC-2720. Read more
ISS SSTV December 4-6
Russian cosmonauts are expected to activate Slow Scan Television (SSTV) image transmissions on 145.800 MHz FM from the International Space Station on... Read more
5 MHz – HA land issues temporary permits for 5350 to 5450 kHz
“The Hungarian telecoms regulator, NMHH (The National Media & Infocommunications Authority – Hungary) following representations from the Hun... Read more
![FT-DX101D VIDEO [ German Version ]](https://qrznow.com/wp-content/uploads/2019/01/FT-DX101D_REVIEW-190x122.jpg)
FT-DX101D VIDEO [ German Version ]
FT-DX101D Announced features for incredible Yaesu FTdx-101D include: * Elite-Level 160 to 6 Meters 100 Watt Transceiver * Superb and astonishing close... Read more
Icom IC-7100 HF/VHF/UHF All Mode Amateur Radio Firmware Update (Release E3)
This is to inform you that Icom Inc. has published firmware update E3 for the Icom ID-7100 on their global website. This new firmware has been... Read more
2015 CQ WW Survey Results – part 2
The CQ WW Contest Committee conducted a survey of contesters from September 2 to 29, 2015. Invitations were sent to everyone who had submitted a log... Read more
ARRL Repurposes AM Broadcast Transmitter for Ham Radio Use
Thanks to a joint effort by ARRL and the Vintage Radio and Communications Museum of Connecticut (VRCMCT), a classic Gates BC-1T AM broadcast transmitt... Read more