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Antennas : 10M
Shortened dipole for 10 & 40m bands
- A shorten Dual-Band Dipole with overall length of about 11 m. For this antenna traps are substituted by inductors, in order to cover the 10 & 40 m. Bands.
Invisible DX antenna for the low bands
- Article by DK5WL describes a multi-band DX antenna for the 160m-40m amateur radio bands with
low visibility but great performance for long distance communication.
Dual Band 40m/17m dipole
- A center feed dual band dipole for 40 and 17 meters by W5DXP
40 meter double bazooka antenna
- A double bazooka antenna plan for the cw portion of the 40 meter band by k0ru
Trapped dipole for 80 and 40 m
- This article explores a theoretical model for the losses of an 80m / 40m trapped inverted V dipole antenna system using a bootstrap coax trap, but does not examine the pattern of the antenna.
40M Inverted Vee
- This simple antenna can be used in various configurations for 40/80/20 or any WARC band or a combination of them
40M Reversible Moxon
- W8EGB moxon project, each side is 51 feet long and the turned in sections are each 7.7ft long.
This antenna performed similar to a full size two element yagi for 40 meters.
Full 1/4 wave vertical for 40m
- Pictures and assembling description of a homebrewed vertical antenna for 40 meter band by ON7AMI
Vertical Moxon for 40 meters
- A vertical half-moxon for the 7 Mhz by F6IRF
Phased Array Discussions
- Interesting discussion about phased array antennas
A 2 Meter phased array antenna
- Phased array Ground Planes antennas for 144 Mhz
Short 40m dipole
- The GM4JMU Shortened 7Mhz Dipole
Wire Dipole for 7.05 MHz
- Inverted Vee antenna for 40m with simulation data by DF9CY
Noise Reduction on 40m
Priority listing
- DF9CY implementation of W1HIS suggestion of inserting a common mode choke into a 40m antennas feed-line.
Beverages on 40 Meters
- Gary Breed, K9AY experience with beverages on 40 meters
40m broadband vertical antenna
- A loopy loop loaded vertical antenna operating range 7.0 to 7.3 MHz by S. C. Chuck Smith, WA7RAI
Magnetic loop for 40 meters
- Mag Loop aerial for 40mtrs. Diameter is 3 Mtrs.
Rotator and tuning with pictures.
Vertical antenna for Vacation
- Vertical Vacation Antenna for 80, 40 and 20 Meter-Band, by Herbert OE3BMB
This antenna is a full size λ/4 for 20m and 40m band, and a shortened λ/4 for the 80m band.
Generally on the 40m band the SWR is under 1,6. In 80m and 20m band at the resonant frequency the SWR is about 1,1.
W4INF Hidden House Loop Antenna
- If you live in a restricted subdivision, you need to make the most out of it. This loop antenna is balanced line fed and works 40m-10m, does decent on 80m.
Phased vertical antennas
- Phased vertical antenna system in french
G8JNJ Broadband HF Vertical Antenna
- G8JNJ Broadband HF Vertical Antenna - Requires no tuner - great results from 40m to 10m plus 80m & 6m with reduced performance
IZ3DVW/B
- 40meter band beacon on 7,039.6 MHz
WebSDR on 20m, 40m and 80m
pop
- On this page you can listen to and control a short-wave receiver located at the amateur radio club ETGD at the University of Twente. In contrast to other web-controlled receivers, this receiver can be tuned by multiple users simultaneously, thanks to the use of Software-Defined Radio
30m QRSS Beacon Transmitter
- This beacon puts out about 0.5W on 10.140MHz. It is intended to be used for Slow Morse (QRSS) operation.
LY1GP software defined radios
- TinySDR for 80m band and ZetaSDR for 40m band
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