headphones splitter box

Spitfire Antenna - A multiband antenna for 40 to 160 meters with control box project by HA8RM

QRP Magnetic longwire balun with VHF-splitter - This Magnetic Longwire Balun (MLB) makes it possible to efficiently use a coaxial lead-in cable with all forms of longwires, T-forms or other types of wire antennas, without the need for an antenna tuner.

PVC Yagi antennas - techniques - Collection of different techniques to homebrew PVC yagi antennas, including elements assembling, baluns and chokes, radiator box tips and tricks by dk7zb

Tri-Mode Buffer Amplifier Box - The TMB-1 is an RF amplifier unit / receiving accessory that can be used with a low-impedance broadband loop, a high-impedance terminated loop (such as a Pennant, Flag, or Kaz Delta), and whip (telescoping rod) antennas.

A Junkbox Multiband Bugstick - A junkbox bugstick for 20m, 17m, 15m, 12m, and 10m bonus at the bottom a junkbox bugstick for 40m

Homebrew SGC SG-237 Control Box - A remote control box for the SG-237 that allow to turn on and off, check status the SGC tuner remotely by AA5TB

RPF Communications - Innovative and fast growing radio communications accessory company in the UK. Station protection, monitoring and control products, Microphone splitters and headsets

I0JXX Ham Radio Parts  ^updated - VHF UHF Amateur radio antenna and antenna parts, accessories for homebrewers, antenna kits, tubes, antenna masts, antenna tripores, insulators, power amplifier mosfet, power splitters by I0JXX

Skymasts - Manufacturers of professional Civil & Defense UHF/VHF Base Sation Antennas,Installation Hardware, Power Splitters and Distributors of EUPEN rf Cable & Connector products.

Anaren - Manufacturer for splitter and combiners, baluns, directional couplers hybrid couplers, modulators, mixers, phase discriminators, antenna feeds.

How to Measure Receiver Sensitivity - Testing an Elecraft K2 sensivity using a signal generator, headphones and an AC Voltmeter

FT-817 Automatic Band Select and Serial Interface - This project is an interface box for the Yaesu FT-817 that includes a band output port, a computer serial interface, and a remote interface for the FL-7000 solid state power amplifiers.

CAT cable schematic for FT 817 857 897 - To connect up your FT-817/857/897 to a PC you have a number of options. For the serial connection you can go ahead and obtain a CT-62 from YAESU. Alternatively you can make up your box with a level converter and cable using schematic in this page

Baofeng UV-3R unboxing and first review - A short review at ICQ podcast on the Baofeng UV-3R handheld transceiver

AirNav RadarBox LIVE  ^updated - AirNav live. See live images from my AirNav Radar box here in Clacton on Sea, Essex. Also full setup details.

Beechhurst Electronic Design Solution - Complete software design suite DVD. From schematic to Gerber files for PCB vendors.

Homebrew a 3 Tube GI-7B-T HF Amplifier - Build a 3 tube, GI-7B-T amplifier using an old prototype box that was meant for 4, 572-B

Headphone amplifier - A headphones splitter box with amplification by Ian White, M0BXR

Bose Headphone Mod - Adding a boom mike to Bose Quiet Comfort (QC-1) noise-cancelling headphones

PC Board Filters - Offer performance comparable to tin-box filters, and except for being bigger, stack up pretty well with those expensive little helical jobs. You just have to be able to make your own PC boards.

Lightning protection Coax box - A lightning protection box done to disconnect antennas from the shack by PE2MC

DC Buss Box - A DC buss distribution box, make it yourself for less than $10

An Accurate Power Meter For QRP Ops - A circuit using two junkbox transistors and a garden variety op-amp that will let you accurately measure your rig\'s flea power down to milliwatts.

A Switchbox for Soundcard Digital Modes - A homebrewed switchbox prooject Don Wilhelm W3FPR

White Box 10GHz Transverter - 10 GHz amateur band transverter