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• K9AY 160m 80m receiving loop antenna - A K9AY loop antenna project done with Far Circuits pc boards for the antenna switch and bandpass filter and preamp by K7SFN
  [ Hits: 987 | Votes: 1 | Rating: 7 ]

• QRZ.com ham radio for sale - Classified Ads at QRZ.com forum, managed with with a bullettin board, offer free ads post.
  [ Hits: 1104 | Votes: 0 | Rating: 0 ]

• Nutaq - Leader in supplying digital signal processing (DSP) boards, systems, design services and OEM products for the Wireless, Scientific and Defense markets.
  [ Hits: 267 | Votes: 0 | Rating: 0 ]

• MikroTik - MikroTik is a Latvian company which founded in 1995 to develop routers and wireless ISP systems. Wifi Routers, router boards, switches, interfaces and enclosures.
  [ Hits: 344 | Votes: 1 | Rating: 10 ]

• RTTY, FSK vs AFK - RTTY transmissions with audio boards, can be transmitted either in FSK or AFSK mode. Learn differences between this two different modes by IK3QAR
  [ Hits: 390 | Votes: 1 | Rating: 7 ]

• NASA Juno Spacecraft - NASA ask ham operators that can participate to assist in testing out some equipment onboard the JUNO spacecraft when it makes its flyby in October 2013.
  [ Hits: 329 | Votes: 1 | Rating: 1 ]

• HSMM Long Range WiFi - High Speed Multimedia Radio Introduction by ARRL Working Group Chairman. Report of the High Speed Multimedia (HSMM) Working Group ARRL Board of Directors 2006 Annual Meeting January 22, 2004
  [ Hits: 672 | Votes: 1 | Rating: 10 ]

• Scans of Elecraft PCB Boards - Elecraft K1 & K2 PCB scanned top & bottom, for troubleshooting
  [ Hits: 355 | Votes: 2 | Rating: 5.5 ]

• Yaesu FT-857 Jumpers - Schematic of Yaesu FT-857 main board original jumpers based on different radio type
  [ Hits: 1292 | Votes: 1 | Rating: 1 ]

• Flightcases.com - UK leading flight case company offers keyboard flight cases, guitar amplifier flight cases, plasma screen cases and flight case hardware.
  [ Hits: 218 | Votes: 0 | Rating: 0 ]

• HobbyPCB Ham Radio Kits - HobbyPCB.com provides quality products and boards for amateur radio including the popular HARDROCK 50 amplifier
  [ Hits: 740 | Votes: 0 | Rating: 0 ]

• Austrian DX Board (ADXB) - The Austrian DX Board (ADXB) is a radio listeners club which serves only residents in Austria and some neighbouring countries, such as Hungary and the Czech Republic
  [ Hits: 422 | Votes: 0 | Rating: 0 ]

• Osmond PCB - Printed circuit board design for Macintosh
  [ Hits: 395 | Votes: 0 | Rating: 0 ]

• JS8Call - Js8Call is communication software designed for keyboard-to-keyboard message passing. Based on the WSJT-X application and implementing the FT8 protocol techniques, it's a separate project run on Linux, Windows and MacOS
  [ Hits: 953 | Votes: 3 | Rating: 10 ]

• 300 W Amplifier for 33 cm band - This amplifier takes advantage of the proliferation of surplus cellular 26v RF boards
  [ Hits: 331 | Votes: 0 | Rating: 0 ]

• 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.
  [ Hits: 379 | Votes: 0 | Rating: 0 ]

• AVR Butterfly Keyer - The Atmel AVR Butterfly is a credit card sized board which contains an AVR MEGA169 processor, a six character LCD display, a five way joystick navigation switch, a piezo speaker, a 3 volt lithium battery cell for power and a few other odds and ends.
  [ Hits: 683 | Votes: 0 | Rating: 0 ]
• FSK interface and CW Keying Interface - Easy to build RS232 keying interface for FSK and CW. Works with most popular RTTY software like MMTTY. Also works for with most contest software such as N1MM and Writelog for CW keying. Uses the RS232 port RTS, DTR, or TX data, optically isolated, PC boards available.
  [ Hits: 924 | Votes: 54 | Rating: 9.68 ]

• N5ES - Outboard T/R Switch - N5ES Outboard T/R Switch For QRP Separates
  [ Hits: 496 | Votes: 1 | Rating: 5 ]

• HF Antenna Analyzer - This article explain how to homebrew and use an HF antenna analyzer by simply adapting a Windows PC, micro-controller and a DDS evaluation board by K6BEZ
  [ Hits: 1472 | Votes: 3 | Rating: 6.33 ]

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