DUO 8 15-20 SF is a fullsize antenna for 14 MHz and 21 MHz. No traps or adapting systems where used to obtain fantastic performances and the best bandwidth. The feed is direct trought 2 separate 50 Ohm cables.
Suitable fot lift towers with side up to: 130 cm / 4.2 ft
Specification
Gain: 14.5 dBi (15m) / 13.0 dBi (20m) *
F/B ratio: 20.0 dB (15m) / 20.0 dB (20m)
SWR: best of 1:1.5 (15m) / 1:1.5 (20m)
Active elements: 4 (15m) / 4 (20m)
Longest element: 11,00 m / 36.1 ft
Boom lenght: 10,00 m / 32.8 ft
For more informations please contact us info@momobeam.com
DUO 8 15-20 SF is a fullsize antenna for 14 MHz and 21 MHz. No traps or adapting systems where used to obtain fantastic performances and the best bandwidth. The feed is direct trought 2 separate 50 Ohm cables.
Specification
Gain: 14.5 dBi (15m) / 13.0 dBi (20m) *
F/B ratio: 20.0 dB (15m) / 20.0 dB (20m)
SWR: best of 1:1.5 (15m) / 1:1.5 (20m)
Active elements: 4 (15m) / 4 (20m)
Longest element: 11,00 m / 36.1 ft
Boom lenght: 10,00 m / 32.8 ft
Feed: 2 separate 50 Ohm cables (baluns 1:1 not included)
Hardware: inox
Wind area: 0.99 m² / 10.67 sq. ft
Wind load at 130Km/h: 807 N
Wind survival**: 130 Km/h – (higher on request)surface: 0.9 mq
Turning radius: 740 cm / 24.28 ft
Power handling: 10 KW
Suitable for towers lift with side: 130 cm / 4.2 ft
Weight: 52.0 Kg / 114 lb
Mast size: 50/60 mm (upper on request)
In addition:
Simplified installation instructions
Separate hardware elements
Detailed manual
* Calculated at 20m from the ground
**Wind survival is the maximum wind speed at which there is no permanent deformation of the antenna
Equipment
SP30B Audiophile
The Palstar SP30B audiophile speaker is a custom-engineered communications radio speaker. To truly enjoy the radio listening experience, you need a hi... Read more
RigExpert AA-230 ZOOM – Antenna and Cable Analyzer
RigExpert AA-230 ZOOM – Antenna and Cable Analyzer 100 kHz to 230 MHz The analyzer is designed for measuring SWR (Standing Wave Ratio), Return... Read more
Airspy HF+ Discovery is the Most Refined HF/VHF SDR
The Airspy HF+ Discovery sets a new standard in terms of reception performance with extra pre-selectors for all the supported bands and a New DSP Core... Read more
EL/AZ 3D Printed Antenna Rotator – Testing !
“One of the Youtube viewers made a comment a few weeks ago asking about my rotator project. Their comment inspired me to finish it. This project... Read more
Kenwood TS-890S 100W HF/50MHz
Kenwood TS-890S 100W HF/50MHz Transceiver More specifications and info will be posted here as it becomes available! Full Down Conversion RX H-mode Mi... Read more
App - Mobile
![Learn Morse Code in Minutes A Day [ APP ]](https://qrznow.com/wp-content/uploads/2019/12/images-10-190x122.jpg)
Learn Morse Code in Minutes A Day [ APP ]
– Learn Morse Code with different modes of learning, using the letter frequency and spaced repetition to help you learn. – Customize your... Read more
Amateur Radio Ringtone from NASA
Download NASA Sounds Here’s a collection of NASA sounds from historic spaceflights and current missions. You can hear the roar of a space shuttl... Read more
SmartSDR for iOS v3.9.12 Now Available
Marcus, DL8MRE announces that release of SmartSDR for iOS v3.9.12 is now available for download or update from the Apple App Store. SmartSDR is a full... Read more
What is Echolink? Ham Radio 2.0: Episode 56
Mark Goodrum, W5MHG, discusses Echolink for Ham Radio at the Duke City Hamfest Read more
MacLoggerDX HD for iPad
MacLoggerDX HD is an Amateur Radio application that monitors the spots from your favourite DX Cluster for DXing, Contesting or casual rag-chewing. It... Read more
Review
Comparing The ICOM IC-705 HF QRP & ICOM IC-7300 Transceivers
Comparing The ICOM IC-705 HF QRP & ICOM IC-7300 Transceivers Read more
New All-band SSB/CW Micro BITX Now Available
“HFSignals.com now offers the uBITX (micro BITX) HF radio, an all-band QRP rig that operates both sideband and CW, for the truly remarkable pric... Read more
DISCOVERY TX-500 Arrives in UK. HF-6m 10W Transceiver
“It’s an exciting new HF radio that packs a lot into a very small space and also packs a punch on the air. Peter G3OJV, takes a first look... Read more
The Real FT8, JT65, and JT9 Signal-to-Noise Ratio Revealed
SNR – Signal-to-Noise Ratio From the 2018 TAPR Digital Communications Conference, we learn about a true measurement of signal to noise ratio on... Read more
Software
SDR++ THE BLOAT FREE SDR SOFTWARE
In this video we take a look at a new and upcoming SDR Application called SDR ++ Wide hardware support (both through SoapySDR and dedicated modules) S... Read more
Released SDRuno 1.41
SDRuno Roadmap Updated 13th September 2021 Version 1.41 of SDRuno® is the latest full production version. The remaining features along wit... Read more
SDR++, A new SDR program. Open source and cross platform!
SDR++ It’s nice to see a new cross platform program in the scene. https://github.com/AlexandreRouma/SDRPlusPlus Read more
N1MM+ Updates!
Version 1.0.9252 (August 31, 2021) K4 Radio Control: Increased the command pacing and slowed the radio polling to eliminate a radio configuration erro... Read more
Ham Radio Deluxe Software Overview
This is an updated overview video that describes the overall features of the Ham Radio Deluxe Software suite. Ham Radio Deluxe Guides and Manuals... Read more
