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hf coil
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Antennas : Baluns
- Coiled Choke Balun for HF
- A very practical Balun for HF aerial work is the choke type. It reduces RFI to and from the feeder & at next to no cost or loss.
[Hits: 1371 | Votes: 0 | Rate: 0.00] Antennas : Dipole
- Inverted V
- Described is a simple inverted-V antenna which, when used with a balanced ATU, can be used on all the main Radio Amateur HF bands (80, 40, 20, 15 and 10m). The cental support is made in such a way that the wire can be coiled up for storage when the antenna is taken down.
[Hits: 2736 | Votes: 1 | Rate: 8.00] Antennas : Mobile
- A $20 HF mobile antenna
- A few hours of fun with PVC and wire and
you’ve got yourself a respectable road radiator. The antenna consists of little more than some PVC pipe topped by a RadioShack replacement whip antenna and a couple of coils made from a small roll of #14 house wire.
[Hits: 7840 | Votes: 4 | Rate: 8.25] - Loading inductors in mobile antennas
- Mobile antennas, loading coil current, and loaded antennas. efficiency and electrical rules.
Loading inductors used in mobile HF antennas.
[Hits: 3528 | Votes: 3 | Rate: 6.67] - An automatically tuned 7-30MHz mobile antenna
- This is a base-loaded vertical antenna that mounts on the car's roof. The loading coil is designed as a variable inductor, with a three-legged chariot that travels up and down inside the coil, with grooved brass wheels running on the coil turns, and driven by a slotted rotor tube.
[Hits: 2996 | Votes: 2 | Rate: 1.00] - A Variable Base-Loading-Coil
- A Variable Base-Loading-Coil for use under a HF Mobile Whip
[Hits: 111 | Votes: 1 | Rate: 9.00] Antennas : Multiband
- Do it yourself HF2V
- HF2V dimensions for all the coils and capacitors. Make your own HF2V antenna with 160 80 40 and 30 meters kits by OZ9AEC
[Hits: 1414 | Votes: 2 | Rate: 9.00] - Homemade Loaded Coil Dipole
- Homemade Loaded Coil Dipole ( w8010 diamond ) for 10, 15, 20, 40 and 80 meter
[Hits: 164 | Votes: 0 | Rate: 0.00] Antennas : Tuners
- Link Coupled Tuner
- Legal Limit Link Coupled Balanced Tuner,for the amateur ham radio HF bands. This Tuner uses plug-in Coils sets for 40, 80, & 160 meters
[Hits: 3085 | Votes: 2 | Rate: 7.00] Manufacturers : Antennas : HF : Mobile Antennas : Screwdriver Antennas
- Hi-Q Antennas
- HF Ham Radio mobile operation antennas manufacturer, W6HIQ, HA5CMG, VE7BOC, HF mobile antennas, screwdriver antenna, coils and filters.
[Hits: 3870 | Votes: 3 | Rate: 6.33] Manufacturers : Antennas : Military
- Barker & Williamson
- Dipole antennas, unique broadband antennas, trap dipole antennas, coils, accessories for HF radio
[Hits: 13775 | Votes: 12 | Rate: 5.84] Manufacturers : Antennas : VHF UHF Microwave
- W3FF Antennas Buddipole
- The Buddipole is a hi-tech, take-apart dipole designed for HF portable operations. The antenna uses a multi-band adjustable coil for all bands 40m - 2m.
[Hits: 2957 | Votes: 7 | Rate: 9.57] Software : Antenna analysis
- HamCalc v1.3
updated
- By G4VWL, HamCalc is collection of calculators for radio amateurs: Antenna ERP calculations.
Attenuators. Audio Filter design.Coil Winding.
Decibels. Great Circles map and calculator HF Filters HF Traps Metric conversions OP Amps
QRA Locator to Latitude/Longitude (and back)
Radio Horizon calculator Resonance Satellite orbit calculator Timer calculations (555 timer)Zener Diode calculations
[Hits: 13812 | Votes: 52 | Rate: 4.06] Software : Circuit Design
- WINRLC
- Simple freeware tool to calculate several kinds of HF filters. Use to calculate L-C and R-C band filters and bandpasses, L-C, L-R and R-C highpasses and lowpasses, coils and capacitors.
[Hits: 4438 | Votes: 11 | Rate: 5.45] Technical Reference : Receivers
- A 80/40m Direct Conversion HF Receiver with DDS VFO
- Juha (OH2NLT) and Matti (OH7SV) have designed JUMA-RX1, an award winning 80/40m direct conversion HF receiver with highly accurate direct digital synthesis VFO. The receiver is very compact, because it constructed using surface mount components. No coils need to be wound to construct this receiver!
[Hits: 4480 | Votes: 11 | Rate: 8.91]
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