The new 6-4-20 is a serious performer with an 11.1m computer optimised tapered boom and 10 elements on both 50MHz and 70MHz with a single feed point.
The 6-4-20 provides impressive performance on both bands with 14.46dBi free space gain on 70MHz and 13.41dBi free space gain on 50MHz. Placed 12m above average conductive ground, gain increases on 70MHz to over 20dBi and on 50MHz to almost 19dBi.
In addition, the 6-4-20 has been optimised for FT8 frequencies as well as the traditional operational areas of the band so as can be seen from the plots, SWR is flat through both bands os no amplifiers will have issues.
The previous longest dualbander for these bands was the 8-8-8- which has an 8m boom with 8 elements on each band sells well. The new dualbander has been in operation at OH5LK and EA5GF this summer with excellent results.
Want a monster on your tower for both 50MHz and 70MHz? There is just one place to look.
Photo below shows the 6-4-20 @ EA5GF nested between an HF Yagi and long-boom 2m Yagi.
“Heil Pro 7 vs Sennheiser HMD 300 Pro. This is pretty in-depth – you may need a coffee and a sit down to watch! This was heavier than I ex... Read more
“WOUXUN ELECTRONICS sincerely invites esteemed you and your company representatives to visit our booth at the coming Hong Kong Electronics Show... Read more
The introduction of our Yaesu FT1DR 12.5 kHz C4FM/FDMA 144/430MHz Dual Band Digital Handheld Transceiver ushers in The Dawn of a New Digital Co... Read more
FR5200H / FR6200H IDAS VHF/UHF Digital Repeaters 50W 100% Duty cycle operation Employing a high performance power amplifier, together with the solid h... Read more
FlexRadio Systems and Marcus Roskosch, DL8MRE announced today a partnership to develop, market and sell a client interface application for both iPad®... Read more
Radio Waves The modern world is awash in a sea of radio waves — currents of electromagnetic radiation upon which our digital lives depend. What if you... Read more
Messi & Paoloni – Notwithstanding its small dimension (7,3 mm) its performances are so good to outperform RG 213/U (10,2 mm) and put into sh... Read more
The PowerGenius XL is a 100% duty cycle, legal limit (1500W ICAS) 1.8-54 MHz RF amplifier intended for both amateur and government use. It incorporat... Read more