circuit

292 links - and 1 categories

Squarooka Antenna - squared bazooka for 2 meters band - DL1GSJ
Sort of similar to the one of the 6m omni Instead of using twin lead ...

[ Hits: 357 | Votes: 0 | Rating: 0 ]

A very efficient half size 40 meter Vertical Antenna - Ray Ring
A vertical antenna project for the 7MHz made with some spare parts Based on a ...

[ Hits: 736 | Votes: 4 | Rating: 8.5 ]

Trapped vertical Antenna - F5ZV
This antenna is an omnidirectional and multiband and it is well suited for DX enthusiasts ...

[ Hits: 357 | Votes: 7 | Rating: 2.71 ]

Notable Patents on Antenna Design - aktuellum
Patents of most popular antenna models including Zeppelin Antenna Beverage Antenna Franklin Antenna Yagi Uda ...

[ Hits: 287 | Votes: 0 | Rating: 0 ]

Proppy HF Circuit Prediction: Space Weather - James Watson
Current space weather condition gauges with solar indices taken from the latest WWV report ...

[ Hits: 137 | Votes: 2 | Rating: 9.5 ]

Yaesu FT-1000-D RS 232 CAT interface - RK3BT
Schematic diagram circuit to build a RS232 serial interface for the Yaesu FT 1000D works ...

[ Hits: 220 | Votes: 1 | Rating: 1 ]

Baofeng UV-5 Programming Cable - HamRadioIndia
Baofeng UV 5R uses RS232 to communicate or programming with the PC software and you ...

[ Hits: 440 | Votes: 2 | Rating: 7.5 ]

mini Ring-Core-Calculator - Calculate windings on ferrite cores - DG0KW
The program can be used to calculate inductors coils and their number of turns on ...

[ Hits: 399 | Votes: 1 | Rating: 1 ]
ZenitPCB - ZenitPCB
An excellent tool to create design printed circuit boards in a simple and easy to ...

[ Hits: 142 | Votes: 1 | Rating: 8 ]
TinyCAD - TinyCAD
TinyCAD is a an open source program for drawing circuit diagrams which runs under Windows ...

[ Hits: 134 | Votes: 1 | Rating: 10 ]
LogiSim - Logic Circuit Simulator - cburch
Logisim is an educational tool for designing and simulating digital logic circuits With its simple ...

[ Hits: 128 | Votes: 0 | Rating: 0 ]
Fritzing - Fritzing
Fritzing is for amateur circuit designers enthusiasts and hobbyists to build their own design and ...

[ Hits: 128 | Votes: 1 | Rating: 9 ]
PCB gEDA - gEDA
PCB is an interactive printed circuit board editor for Unix Linux Windows and Mac systems ...

[ Hits: 104 | Votes: 0 | Rating: 0 ]

70cm Beacon - S57NAN
PLL synthesized 70cm CW beacon exciter The exciter is built arround a slightly more advanced ...

[ Hits: 131 | Votes: 1 | Rating: 10 ]

Frequency counter project - QRP Labs
This project includes quite a number of useful testing features which were very useful when ...

[ Hits: 128 | Votes: 0 | Rating: 0 ]

PT40 7 MHz Transceiver by AA3SJ - AA3SJ
Home made 40 meter transceiver project The receiver is a Progressive Receiver with a few ...

[ Hits: 163 | Votes: 0 | Rating: 0 ]

DL4YHF PIC-Keyer - DL4YHF
This page describes a printed circuit board that you may use to build a QRP ...

[ Hits: 128 | Votes: 1 | Rating: 7 ]
Juma Keyer1 - OH2NLT
Miniature PIC microcontroller based keyer kit with convenient modes The kit includes PCB componets knob ...

[ Hits: 101 | Votes: 0 | Rating: 0 ]

VK5TM Noise Canceller - VK5TM
Noise Canceller kit originally developed about 1989 by G4WMX and GW3DIX and improved by DK9NL ...

[ Hits: 476 | Votes: 1 | Rating: 10 ]

Behringer HA400 Headphone Amplifier and RFI - WB5NHL
Removing disturbing RFI from the Behringer HA400 Headphone Amplifier using ferrites and capacitors soldered in ...

[ Hits: 121 | Votes: 2 | Rating: 5.5 ]