lambda
12 links
Antennas : 20M : 20 meter Vertical Antennas
- Vertical antenna for 20-15-10 m
- This is a vertical multiband antenna made up of several aerial elements lambda/4 length, feeded with just a coaxial cable in French.
[ Hits: 23580 | Votes: 20 | Rating: 5.2 ]
- Slim Jim 2m Vertical
- This VHF 145 MHz antenna is easy to build and with no radials. It shows equal gain of 5/8 lambda. It is light weight, you can hang it somewhere (on a tree may be) and work.
[ Hits: 3391 | Votes: 3 | Rating: 6 ]
- Lambda / 2 no Counterpoise ATU
- The Multibandfuchs by DL7AQT, Frank
[ Hits: 434 | Votes: 0 | Rating: 0 ]
- Antenna too short! Inductivity matching with coil match.
- Wire antenna calculator with inductivity matching coil where length shorter lambda/4
[ Hits: 132 | Votes: 0 | Rating: 0 ]
- Folded dipole antennas: terminated vs un-terminated
- As the name suggests, it is simply a dipole with the tips folded towards each other. In this case, a full-wave dipole. The span of a standard folded dipole is aprox 0,5 lambda. In this article the author investigate on differences between un-terminated vs terminated folded dipole antennas.
[ Hits: 494 | Votes: 9 | Rating: 6.78 ]
- Some secrets of Common Mode Chokes revealed
- This is a small collection of K9YC info and my experiences. Problems by feed lines of 1/2 lambda length. CMCs in transmitting and receiving systems. Antenna unbalance, Maximal allowed power, Choke winding tips.
[ Hits: 174 | Votes: 1 | Rating: 10 ]
- The normal-mode helix antenna
- A helix will work in the normal mode when the diameter and pitch of the helix is less than 0.1 Lambda
[ Hits: 3054 | Votes: 7 | Rating: 5 ]
- Eggbeater Mobile Antenna
- The eggbeater antenna uses on mobile operations using the metal roof of the car as the reflector. The distance between the antenna and the roof as described in this article should be 1/8 lambda.
[ Hits: 127 | Votes: 0 | Rating: 0 ]
- Balcony Vertical HF Antenna
- The simple balcony vertical HF antenna made with plastic fishing pole. Just along the pole I install copper wire in 7 meter length. Then was installed ATU. It was used home brew tuner. For each band was used one counterpoise in length 0.8 x lambda/4
[ Hits: 238 | Votes: 0 | Rating: 0 ]
- Antena gamma match
- Gamma match antenna is an antenna 1/2 additional lambda with the impedance matching more flexible arrangements (var capacitor) by sliding through the gamma match/road.
[ Hits: 2179 | Votes: 10 | Rating: 4.1 ]
- Lambdahalbe Antennas
- Antennas manufacturer based in Germany produce portable and wire HF VHF antennas
[ Hits: 487 | Votes: 2 | Rating: 10 ]
- Kentronix
- Dealer of electronic test equipment dealers since 1977 equipment manufactured by Tektronix, Hewlett Packard, General Radio, Dranetz, Bird, Fluke, ENI, ESI, Wavetek, Narda, Keithley, Weinschel, Microlab/FXR, Systron Donner, Kepco, Lambda
[ Hits: 562 | Votes: 1 | Rating: 1 ]
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