antennas1356 links - and 89 categories
Antennas : 2M
- A portable 2-element VHF yagi
- Build a portable VHF yagi antenna for 2 meters. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4 CPVC pipe with one tee.
[ Hits: 28280 | Votes: 24 | Rating: 7.08 ]
- SWR: Maximum allowable VSWR
- VSWR (voltage-standing-wave-ratio) represents the degree with which an antenna is "matched" to the system impedance. Most modern antennas do not require any tuning for optimum performance. VSWR is one of the easiest parameters to measure and VSWR meters are becoming very popular antenna installation tools
[ Hits: 1197 | Votes: 3 | Rating: 3.33 ]
- Mobile Helix Antennas for HF
- Normal mode helix antennas for HF mobile. Photos andn plan for a 20 meters mobile helix antenna by N2MH
[ Hits: 13423 | Votes: 15 | Rating: 7.46 ]
- Copper J-Pole Antennas
- Conejo Valley Amateur Radio Club, article edited by Rory Eikland, KG6HCU and Ken Larson, KJ6RZ, they have had excellent experience building and using J-Pole antennas, and share their experience on planning VHF and UHF Jpole antennas.
[ Hits: 13720 | Votes: 15 | Rating: 7.07 ]
- Antennas for 136kHz
- A very long and exaustive documentation on building antennas for 136 khz. Includes links to antenna design software for longwave
[ Hits: 4710 | Votes: 4 | Rating: 8 ]
- Antenna Tuning
- Tuning mobile and base antennas, measuring SWR.
[ Hits: 6560 | Votes: 3 | Rating: 5 ]
- A Magnetic Loop antenna for 7-21 mhz
- If you find external wire antennas obtrusive for amateur radio or short wave listening, then this is the antenna for you, is just 1 meter diameter
[ Hits: 3752 | Votes: 2 | Rating: 5.5 ]
- Travel loop antennas
- PA11019 Travel loop antennas, these antennas cover 6.300 to 29.200 mHz , handle 35 Watts and have a packing size of 43 cm, ideal for fieldwork, or mobile operations.
[ Hits: 3502 | Votes: 1 | Rating: 9 ]
- Quad or Loop antenna
- Information about quad and loop antennas, matching tips, differences on polarization and impedence by PA0FRI
[ Hits: 890 | Votes: 3 | Rating: 4.33 ]
- Antenna Selection Made Easy
- This page will help you answer important questions about antenna selection before you talk to a supplier. After reading this paper, you should be able to better determine the most important parameters you need to know for your antenna selection criteria.
[ Hits: 1997 | Votes: 2 | Rating: 3 ]
- Alpha Delta Communications
- Manufacturers and distributors of coaxial surge protectors, coaxial switches, insultators, HF fixed wire antennas
[ Hits: 2938 | Votes: 4 | Rating: 5.83 ]
- Antenna manufacturer in Taiwan, products range are RF communication antennas ( CB, VHF, UHF, Dual band, Base Station, Marine, GPS,GSM, PCS, Cellular, DVB-T ) , Amplifiers , Mounting Kit ,Accessories & Related products.
[ Hits: 4226 | Votes: 8 | Rating: 4 ]
- Spider Antennas
- Compact HF antennas for home and mobile use, compact HF maritime antennas, manufactured by multi-band antennas
[ Hits: 2359 | Votes: 2 | Rating: 1 ]
- Ciro Mazzoni Antennas
- HF Antennas, magnetic loop antenna, based in Italy
[ Hits: 4984 | Votes: 9 | Rating: 5.89 ]
- Antenna Noise and Signal Cancelling at LF
- The fact that the phasing between a wanted signal and an unwanted signal can be different on different antennas is put to advantage. With this condition, the unwanted signal can be cancelled out by controlling amplitude and phase. The heart of the system is some form of phase control circuitry.
[ Hits: 587 | Votes: 0 | Rating: 0 ]
- HF Antennas for restricted space
- Arrl document about invisible antennas and indoor systems. It is important to consider that few compromise antennas are capable of delivering the performance one can expect from the full-size variety. But the patient and skillful operator can often do as well as some fellows who are equipped with high power and full-size antennas. The "cliff-dweller" may not be able to "bore a hole" in the band as often, and as easily, but DX can be worked successfully when band conditions are suitable.
[ Hits: 8680 | Votes: 6 | Rating: 4.83 ]
- Butternut manuals
- Manuals of butternut antennas
[ Hits: 1148 | Votes: 3 | Rating: 8.33 ]
- GI Joe's radio electronics
- Dealer for Cb radios, Cb antenna & accessories Galaxy radio, Cobra cb radio, Ranger, Texas Star, Palomar. Police scanner, radar detector, GPS, GMRS, FRS, Wilson cellular amplifier & antennas. Owners manuals, schematics and links.
[ Hits: 12526 | Votes: 82 | Rating: 7.92 ]
- Ferrite on Reducing RFI
- Using ferrite to reduce radio frequency interference with your PC monitor or antennas with your receivers or transceivers.
[ Hits: 2197 | Votes: 0 | Rating: 0 ]
- QRM and noise reduction
- You will find on these pages my experiences and results on antennas and local/non-local QRM/noise reduction. Using a broadband vertical active magnetic loop and a home made / designed broadband amplifier. Two vertical magnetic Alford loops are used in an array.
Analog and Digital Signal Processing and a dual phase coherent Software Defined Radio (SDR) are used. By PA0SIM
[ Hits: 4970 | Votes: 6 | Rating: 7 ]
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