Technical links (page 1) for amateur radio projects  and tools
 Technical related AMATEUR RADIO LINKS  Commercial Technical Amateur Radio related LINKS
CDG2000 HF TRX by G3SBI & co (advanced trx project) ALMOST ALL DIGITAL EL.(Filter design soft.,L/C, more)
G3SEK Technical site   (tetrode tubes control board, more) AOR (UK) (John Thorpe IMD testing of high perf receivers)
G3YWX Radio-Electronics                     (tutorial, links) INRAD   (Sells IF Cristal filters, mech., also for home brew)
Home made by I4LRH                            (several projects)  MiniCircuits       (rf mixers, transformers, combiners,more)
IK2JSB  (soft. for filter/AMIDON toroid calcul., R.R.5/02) ROCKWELL COLLINS Mechanical FILTERS 455 KHz
IW3HEV                               (DDS module with AD9851) SYNERGY      (mixers, vco, transformers, combiners, more)
KF6DX (Doug,QEX editor.ORION Ten-Tec technical site) TESTMART (in California, Application note search service)
K8CU Technical site    (High Voltage regulator, more) Some RF semiconductor manufacturers, for data sheet  
K8ZT   QRP,CW, PROJECTS and more resources links DATASHEET LOCATOR    (790  manufacturers listed)
OK1RR            (under Technical stuff, pb filter data, more) DATASHEET CATALOG
SM0VPO                                                      (Homebrew)  AGILENT (ex HP), Semiconductors  (data sh., appl. notes)
WA1ION                              (RF Circuits Building Blocks) ANALOG DEVICES          (Technical Library, data sheets)
RF Filter Design and Analisys by AADE  NOW FREE CALOGIC SD5000N (DMOS switches for High Lev. HF Mixer)  
WB6BLD Technical Software  (ELSIE Filter design, more) Fairchild FST3125    (as HF High Level Mixer, see G3SBI)
W6/PA0ZN                           (Spectrum Analyzer project) PA3CKR has also tested H-Mode Mixer with FST3125
W8JI  (Tom technical site, RX  and Preampl tests) AppCad software by Agilent  vers. 3.0 or  2.5.1 other site
W8ZR Technical site  (EZ-Autotuner, high power HF, more) MA-COM         (new  RF Mosfets MRF150 manufacturer)
Bavarian Contest Club projects (HF preselector,filters, more) MOTOROLA Semiconductors
ORION HF transceiver by Ten-Tec MANUAL now in .pdf PHILIPS         (lot of RF components,  RF application note)
Ten-Tec new 2x4CX800A Titan III with .pdf manual-photos Sites with a lot of LINKS, tech., mods, dealers, manuf.
Alpha Power see Alpha 99 with 4CX800A WWW.MODS.DK (loaded of manuals,radio modifications)
QRO tech lin ampl with 4CX800A AC6V                    (Amateur Radio Guide, over 6000 links)
AB4OJ/VA7OJ       (ICOM enthusiast, a lot of links about) EHAM     (Amateur Radio on the net,product reviews,more)
  HAMRAD  (Amateur Radio Sites, mods, dealers, manufact)
VA3CR           (Yaesu 1000MP, 1000MP-Mark V, more) K1DWU                      (over 4500 Amateur Radio LINKS)
NU9N    (SSB HI FI AUDIO, RX audio analysis, more) GOOGLE                         (for general searches on the web)