frequency 453.850

N3OX Flex Vertical for 40m - N3OX three meters Flex Vertical, a Short, Frequency Agile Vertical for 40 meters

Slim Jim antenna calculator - How to make a simple but effective Slim Jim antenna. It includes a calculator to work out all the mesurements for the frequency you require.

Cubical Quad Antenna Calculator - Easy Quad calculator, enter center frequency to get a quad antenna size

Multiband fan dipole antenna - A three-frequency multi-band dipole

Tuning HF Coaxial Antenna Traps - The problem with making your own trapped HF antennas is usually getting the coaxial traps tuned to frequency.

KD5SDJ Indian Territory Amateur Radio Society - small but dedicated group of radio operators who primarily operate on a simplex on a frequency of 147.435

Resonant Frequency - Resonant Frequency: The amateur radio podcast was created to help get information on amateur radio out to the new ham and the ham that wants to find out about different aspects of the hobby they are thinking about trying out.

PRO-COMM INC - High power, UHF, L-band, S-band, C-band, microwave frequency amplifier and oscillator devices, pulsed, CW, fixed-tuned, or tunable devices in the range of 600 MHz to 2000 MHz

SSTV Frequency List - Where to look on the Bands for SSTV

Introduction to Digital Modes - Wireless Society of Southern Maine, Digital Modes Page, introduction to amateur radio digital modes, including FLDIGI, PSK31, RTTY, high speed CW, Slow Scan Television, HF Weather Fax, WeFAX, MFSK16, OLIVIA, G-TOR, AMTOR, MT63, Digital SSTV, Frequency Key Shifting, and more

Frequency adjustment on TS-870 - Adjusting frequency on Kenwood TS-870S

Mods Kenwood TS-870 ACC2 Input - This mod flattens out the ACC2 audio input low frequency response

Frequency Measurement with the FT-920 - KC5M frequency measurement with yaesu ft-920

Home - Hunter Valley Scanning - Radio Frequency Scanning Newcastle and the Hunter Valley. Lots of Frequencies plus videos and photos and web links.

Hagerty Radio Company - Offer a Direct Digital VFO Kits (variable-frequency oscillator) using the Analog Devices AD9951 by WA1FFL

JT65-HF - Download JT65-HF Amateur Radio software for reception/transmission of JT65A protocol with an emphasis upon its usage in the High Frequency Amateur Bands.

MicroMUF - MicroMUF is a windows free HF propagation calculator that you can use to estimate the MUF (Maximum Usable Frequency) and LUF (Lowest Usable Frequency) between any two points on the Earth.

iRFC for iPhone - IRFC offers a full Radio Frequency Calculator on the go for network impedance adaptation with smith chart

70MHz Beacon - Description of the beacon hardware and DDS frequency source used for G4JNT personal beacon

Programmable 50 MHz Counter - The frequency counter described here was built up using the "sandwich" construction and uses low cost components

12GHz frequency meter - A frequency counter device up to 12GHz by DL5NEG

The BBRC Frequency Counter - The Burnham Beaches Radio Club frequency counter is a PIC micro controller based frequency counter with LCD readout. It can be used stand alone or the in built offsets allow integration into a receiver

The BBRC Frequency Counter - PIC micro controller based frequency counter with LCD readout

20m CW QRP Transceiver - The direct-conversion receiver uses an audio-based automatic gain control, an LC tone filter, and a 100-kHz crystal for frequency alignment. The same VFO is used for transmitting and receiving by DC1YB

Crystal tester - Crystal tester project, crystals are used to control the operating frequency of transmitters, and it is used in radio frequency converters, oscillators, filters for cw, ssb and many other applications.