uhf log periodic

A J-Pole for 2-meters and 70-cm  ^pop - An Easy Dual-Band VHF/UHF Antenna from QST September 1994

HF J-Pole antenna - A Simple Nondirectional Antenna for Ten Meters QST February 1950, Easy to build J-Pole antenna for restricted space.

Build your first dipole - The dipole antenna is an easily designed and made antenna usually used on HF, although can be (and sometimes is) made for VHF and UHF antennas, and in varying forms is also used as part of different designs of antennas – i.e. as the driven element for directional antennas.

VU2TQC Slim Jim - An home made slim jim antenna for 2 meters band by VU2TQC

SWL antenna distribution system - A methodology for connecting multiple LF/MF/HF receivers to a single antenna via readily available and inexpensive 75-ohm TV cable. Custom made baluns and splitters provide impedance matching and prevent interaction between receivers.

Quarter Wave with radials - VHF quarter wave antenna mainly for scanner usage, The quarter wave antenna is an easily designed and constructed antenna for whatever frequency you want, although with the following design, you may to limit it to the VHF and UHF bands due to the physical size.

EAC R-390A - Photos and description of an EAC R-390A

W5JI Boatanchor Haven - Dedicated to the Care and Feeding of BoatAnchors, includes some Drake catalogs, and 1968 Collins Mechanical filter catalog pages

TX5K Online-Log - TX5K Log On-line Clipperton 2013

Flex-Flyer CW Keyer - Precision CW key for the discriminating amateur with NO maintenance you can literally send CW Forever! Iambic CW keyer using space age technology

Definition of frequency bands - Definition of radio frequency bands, hf vhf uhf etc.

CT1EFL Web Site - Personal web pages with logs, information on learning cw and operating in CT-land.

Southern California Repeater Lists - The most up-to-date listing of VHF/UHF amateur repeater stations operating in Southern California.

Yaesu FT-817 - Yaesu FT-817 Portable QRP MF/HF/VHF/UHF Transceiver, an assortment of technical information

HRPT - NOAA HRPT - High Rate Picture Transmission, the main source of high quality data from polar orbiting meteorological satellites

Spectrum Lab  ^pop - DL4YHF's Audio Spectrum Analyser Spectrum Lab or Speclab started as a simple FFT program running under DOS a long time ago, but it is now a specialized audio analyzer, filter, frequency converter, hum filter, data logger and more. Can be used for MTHELL QRSS, DFCW, PSK, MSK, Castle

Nlog - Palm os logging program 19 seperate fields for detailed records Stores thousands of records Find records quickly using the PDA's built in search engine User customizable fields Beam records to other handhelds View multiple records at once Print records to you IR printer Great for shortwave listening

Virtins Technology - Offer PC based virtual instrument for electronics enthusiasts, students and professionals, including full-fledged sound card real time Oscilloscope, Spectrum Analyzer and Signal Generator.

MeteoWare, meteorological freeware - Freeware Synop Decoder in multilanguage format

Low noise preamplifiers  ^pop - Lot of projects of preamplifies from HF to VHF and UHF by yu1aw

Receive only processing equipment - One of our most popular products, receiving preamplifiers are used for achieving top signal band performance in competition operating, low noise longwave reception, repeater applications into the UHF region, or lab use

General Information about RFI/EMI - RFI/EMI RadioFrequency interference/electromagnetic interference by ARRL Technical Information Service page

Ham Radio Online - Computer Networking RFI - This page is to provide links to resources and information regarding technologies to reduce computer interference

TVI filters - These filters are in use by hundreds of VHF weak signal operators and have been proven to be an effective solution for fundamental overload problems.

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.