3 band

845 links - and 5 categories

Multiband delta loop by DL2HCB ^pop - A 10-20 meters coverage delta loop antenna by DL2HCB
[ Hits: 81653 | Votes: 42 | Rating: 4.79 ]

KK5BL How To Build A G5RV Antenna - How to build a G5RV Transmitting antenna Originally posted to the packet bbs system by KC6CFF. The G5RV is an easy-to-build 80-10 dipole requiring no traps. All bands are covered, including 30, 17, and 12. The G5RV has high SWR, by design, on most bands and a tuner is required
[ Hits: 25188 | Votes: 7 | Rating: 6.15 ]

7 Elements YAGI for 144 Mhz ^pop - The QM7 antenna is a simple 7 elements Yagi with 3.7 m boom length for the lower 144 MHz SSB/MGM band, in PDF Format
[ Hits: 42744 | Votes: 49 | Rating: 5.87 ]
QM5 Yagi for 2 meters band - The QM5 antenna is a simple 5 elements Yagi with 1.88 m boom length for the lower 144 MHz SSB/MGM band, I used it mainly for Sporadic-E and MS contacts. It exhibits a forward gain of 9.17 dBd; i.e. 11.3 dB forward gain over the isotropic radiator, while the F/R is about 11.5 dB. Elements
[ Hits: 6869 | Votes: 4 | Rating: 5.25 ]

G5RV multi-band antenna - Multi-band centre-fed antenna capable of very efficient operation on all HF bands, specifically designed with dimensions which allow it to be installed in gardens and other open spaces which accommodate a reasonably-straight run of 31.1m (102 ft) for the flat-top standard model.
[ Hits: 7302 | Votes: 8 | Rating: 7.38 ]

Indoor antenna de F6CYV ^updated ^pop - Indoor wire antenna project for 7 Mhz band, basically a bent dipole antenna, design based on a project by F6CYV
[ Hits: 49754 | Votes: 60 | Rating: 6.94 ]

Maria Maluca by DL4AC - A PDF File of a Maria Maluca multiband HF antenna with schematic diagram, dimension and plan
[ Hits: 834 | Votes: 0 | Rating: 0 ]

Antennas for HF mobile operation ^pop - The following description should give you guidance on how to build a mobile antenna for HF bands yourself, using a very cheap CB-mobile whip antenna base. Antennas for mobile operation 7Mhz ,10Mhz, 14Mhz, 18Mhz, 21Mhz, 24Mhz,28-430Mhz
[ Hits: 90296 | Votes: 80 | Rating: 5.12 ]

A Portable Multi-Band Magnetic Loop Antenna ^pop - Described here is a simple multi-band magnetic loop antenna designed for 20, 30 and 40 metres, but by changing the overall length of the wire coverage of other bands is feasible
[ Hits: 34659 | Votes: 12 | Rating: 6.33 ]

9 band vertical HF antenna by RW3XA ^pop - Simple vertical radiator with matching box. No traps, no tuner required for this multiband antenna
[ Hits: 38750 | Votes: 43 | Rating: 7.34 ]

OH7SV Matti Hohtola Ham Projects - The most modern QRP transceiver in 2004,Direct Conversion HF Transceiver with DDS LO, 50 ohm to 200 ohm HF wide band transformers, Wilkinson splitter for RX measurements, Windom baluns 2001/2004, Ferrite rod antenna for 80 meter, Magnetic Loop Antenna for 80 m, Mascot Switched PSU 9320 modification to 8A peak current, 150W MOSFET linear amplifier for 80m, 80 m HF SSB/CW Transceiver
[ Hits: 20373 | Votes: 36 | Rating: 8.11 ]

MF and HF Amateur Radio Band Charts - Easy to read set of band charts for the amateur radio MF and HF bands: 160, 80, 60, 40, 30, 20, 17, 15, 12, and 10 meter by W5JCK
[ Hits: 1607 | Votes: 6 | Rating: 3 ]

DeltaKilo Yahoo Group - This is a group for CBers, Sidebanders, Amateurs and Freebanders. Items to be discussed are CB, Skip, Skeds, DX communications, SSB, export radios, Radio equipment, mods, ham radio, repairs, electronics, CW, PSK31, RTTY, digital, and different radio shops.
[ Hits: 755 | Votes: 1 | Rating: 8 ]

FM ATV repeater PI6ATS - Amateur television Repeater PI6ATS in the middle of the Netherlands. Output in 23 cm band, inputs in 13 cm and 6 cm band. All home made.
[ Hits: 1164 | Votes: 4 | Rating: 7.75 ]

200W 136 kHz transmitter - A transmitter project for the 136 kHz band by IK2PII
[ Hits: 363 | Votes: 0 | Rating: 0 ]

NPR New Packet Radio - IP over 430 MHz - NPR (New Packet Radio) is a custom amateur radio digital protocol, designed by F4HDK to transport bidirectional IP trafic over radio links on the 70cm band. This IP protocol is optimized for point-to-multipoint topology, with the help of managed-TDMA. Bitrate is up to 500kbps. Home Made modem has a built-in ethernet port to connect to PC. To boost power a DMR amplifier is required to reach 20W. This project is an extension of HSMM - Hamnet - AREDN networks
[ Hits: 151 | Votes: 0 | Rating: 0 ]

UK Radio Frequency Bands - A guide from 0 Hz to 30 MHz The main bands, all frequencies in MHz unless otherwise stated
[ Hits: 13143 | Votes: 24 | Rating: 5.67 ]

AREight - This is the most advanced scanner software for the AR8200 and the AR8600. It can effect any type of scan, can scan from 1KHz to 3000MHz in one time. The AREight is a software for help you to listen signals from around the globe on the shortwave bands
[ Hits: 3452 | Votes: 14 | Rating: 5.43 ]

Axis Spectrum Analyzer - Axis Spectrum Analyzer allows you to record audio along with sincronized 31 band spectrum analyzer readings from any audio source to be inputed into Macromedia Flash movies in an easy to integrate way. The software can also be used to display real-time audio with customized visuals on video devices such as projectors, tvs,etc.
[ Hits: 11256 | Votes: 5 | Rating: 4.2 ]