delta loop 21 mhz

MAGLoop Antenna  ^pop - Magnetic loop antenna for 10-30 MHZ, 3.5-10 MHZ, description, construction details, homemade.

VHF TX Loop - VHF Antenna in a lunchbox. The magnetic loop on two metres band Lloyd Butler VK5BR

LA6NCA Loop antenna - Car mount magnetic loop antenna plans from 3.5 MHz to 7.5 MHz, LA6NCA, Larvik, Norway

A Small Wire Loop Antennas for 160 meters  ^pop - Low noise, receive only coax loop antennas for 160 - 10 meters HF bands

Small Loop Antennas by AA5TB - Also known as Magnetic Loop Antennas, by AA5TB, construction tips and tecniques of a Small Loop antenna

W6OAV'S LOOP - Bill Rinker, W6OAV, handcrafted this compact magnetic HF loop from copper and pvc plumbing supplies, a 12 volt motor, and some teflon sheets. He's had great reports with it.

The new magnetic - Another illustrated magnetic loop antenna project

Portable Loop Antenna  ^pop - This loop it is small and light enough to carry while operating, it disassembles into small but rugged pieces that fit easily in a backpack or gym bag, and it can be tuned from 14 MHz to 30 MHz. This tunable magnetic loop antenna is my contribution to the well established art of amateur loop making. Can be tuned from 14 MHz to 30 MHz.

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

Magnetic Loop Antenna by ON2BBP - A magnetic loop antenna for indoor (apartment) usage.

4X44 elements 2300 Mhz Loop Antenna - F6BON antenna 4x44 loop array in french

The Official Oscar Delta Web Site - Oscar Delta DX group

Oscar Kilo International Dx Group - The Next Generation of Dx'ers provides professional operators with a passion for radio service, computers and the internet with the means to unit as one for the next peak in the 11 year 27 Mhz cycle.

27MHz DX-Pagina - Dutch web site dedicated to freebanding on 27 mhz.

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.

VLF Loop Antenna - A project on building a VLF loop antenna

Online repeater in Los Angeles - An amateur radio web site serving the notorious 147.435Mhz Repeater in Los Angeles. Listen to the Shoutcast Live Streaming Audio.

Current Optimal Frequency Charts - Optimal Working Frequencies (MHz) for High Frequency (HF) / Shortwave Radio. By region, updated monthy.

ICOM-706 TX RX Extended mods - extended transmit from 1.6 to 54 MHz, receive from .05 to about 165 MHz

430MHz ATV transmitter - ATV transmitter on 430MHz band used with special transmitting tube named 5894 for final stage. Run about 10W average for TV signal and 20W at synchronous peak. Final stage control gird modulation works well for NTSC color video signal and good at audio as well.

2m Band VHF antenna pre-amplifier - Homebrew pre-amp for 144-146 MHz amateur band and OSCAR Satellites, using BF981 Dual-gate MosFet. Gain ~15 dB, NF=1dB.

6m Preamp - A dead easy 50 mhz preamp by VK3CJS

Garex VHF preamp - It is available for spot frequencies in the range 40 - 250MHz, where a typical gain of 26dB can be achieved

144 MHz preamplifier with BF981 - Design of a preamplifier for 144 MHz with 1 dB NF and 23 dB gain using BF981. This amplifier is using a low cost silicon MOSFET (BF981 from Philips) to give more than 20 dB gain with around 1 dB noise figure on 2 meter.

6m High Pass TVI filter - Are you suffering from TVI? Then why not try this filter for size. It is a three-stage high-pass filter that blocks low-frequency 50MHz signals while letting through UHF TV.