VHF/Weak signal related hardware

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Circuit diagram, place plan, PCB layout of a roger beep for meteorscatter, simple add-on,
needs no wires to be cut, senses PTT line and
adds beep when PTT goes inactive
from DL4MEA's pages Circuit diagram place plan, PCB layout
of an improved version of LA8AK's audio
up-converter for meteorscatter
from DL4MEA's pages
Further info on Motorola's MC1496P

Block diagrams of meteorscatter rigs Circuit diagram
DL3NCR's audio keying circuit for HSCW
(in German language)

The "K" series Morse Keyer Website
morse keyers for speeds up to 6000lpm
by K1EL The DUBUS Archives from DUBUS issues
1982 - 1992 : pdf-filed technical articles

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Circuit diagram
audio keying circuit for high-speed CW
keying interface for OH5IY's MS-soft
Rig Modifications for high speed CW
from PA5MS's (ex PE1OGF) pages External RX Input modification
for the Yaesu FT847
from DL4MEA's pages

Modifications of the IC202 transceiver series
from DH5FS's pages

IC202(E/S), IC402, FT225RD, D200
mods, manuals, tests, schematics
from PE1HWO's pages
Upgrading a conventional rotator controller,
speed reduction Yeasu/Kenpro 1000 rotator
from PAØPLY's pages
Manuals and Mods by KB2LJJ
Manuals and Radio Mods database
Modifications of FT736R by OH5IY
tx delay & high speed keying
Mods & improvements of the IC746
from GW8IZR's homepage
Modification of the IC746
for 2m RX/TX separation
from K7YVZ's homepage
Modifications of FT736R / IC746
from IK6MLI's homepage

Modifications of the FT225RD
rx/tx split, transverter output, IF output
from SM7OVK's pages

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Soundcard Interfacing by DL9AN
USB/Ser/Soundcard interfaces
Soundcard Interfacing by WM2U
interfacing schemes for various radio models and Sound Card configurations
DSP-10 Project Amateur-radio 2mtr transceiver that can be built at home,
operates SSB/FM/CW
Features are tailored to operation with weak
signals on VHF/UHF/SHF. The software part of
this project can actually be used as a
stand-alone DSP processor, with 200Hz/450Hz wide 600Hz center freq CW filters, spectral
display, waterfall display, online information on
moon az/el, doppler shift for your path
& sun noise measurements by W7PUA

Digital Tape Recorder (DTR, DTR+)
DF7KF's digital tape recorder
for meteorscatter Results of an elaborate test comparing
the performance of the DTR,
a modified tape recorder, and MSDSP
by Maarten Broess N1DZ (ex PE1FIG, W1FIG)

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VHF construction projects
VHF antennae, weak signal source, preamp,
az/el digital readout, sequencer by W5UN VHF construction projects
by DL4MEA

PA3BIY LNA Design with ATF-54143
from PA2DW's pages YU1AW's library of projects & articles
VHF/UHF preamp design, power amplifiers,
software

144MHz GS35b High Power Amplifier
from DL4MEA's pages

Modifications to the W1SL 144MHz PA
from GM4JJJ's pages Simple water cooling of a 2C39a PA
from GW8IZR's pages

W6PO 8877 144MHz kiloWatt Amplifier
Reprint of the classic construction article from
Eimac Amateur Radio Newsletter
from W5UN's pages Modified W6PO kiloWatt Amplifier
from WB5APD's pages

144MHz 4CX800A High Power Amplifier
from Svetlana Technical Bulletin #42 144MHz 2x4CX250B High Power Amplifier
from LAØBY's pages

ITT AM6155/AM6154 amplifiers by N1RWY
Mods, discussion, history, & pictures of the
ITT AM6155/AM6154 amplifiers,
can be modded for 144/222/432MHz,
300-500Watts out on each band
see also : WZ1V's VHF Modifications Page DL1IAO's list of hot links
to homebrew PA projects

TE solid state amp
by KJ6KO ND2X's QRO pages
list of hot links to PA projects with
tubes of the Russian GS series
HF/50/144/432MHz/23/13cm

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Power Amplifiers, Tubes & Related Items
by Dr. David Kirkby, G8WRB EIMAC Tubes
Reference Data

Russian Tubes Data Sheets/Reference Data
Russian tubes from <Tubes.ru> Russian Tubes Data Sheets/Reference Data
Tubes of the GI/GS/GU/RW/TH/YH/YL series
from DF6NA's pages

Russian Tubes Data Sheets/Reference Data
Russian tubes from ND2X's pages Datenblätter von Röhren aller Art
Beschaffungsservice von DJ4FU

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Coaxial Cable Data line losses, max power,
diameters, halfwave/quarterwave lengths How to cut phasing linesto length
from GM4JJJ's pages

Stacking Yagi Antennas from
G3SEK's "Amateur Radio Technical Notebook" VHF/UHF Long Yagi Workshop includes
information on the latest yagi designs by DJ9BV
for 50/144/432MHz; from
G3SEK's "Amateur Radio Technical Notebook"

High Performance Antenna Stack for 2m
from S55WW's pages, also features homebrew projects of 14/144MHz transverter,
144MHz LNA Online Microwave Antenna Book by W1GHZ
"Fool-resistant" sequencer by W1GHZ
for microwave transverters

VE7BQH 144MHz Long Yagi
construction details of a portable 43ele yagi
from W7GJ's pages DK7ZB VHF Antennae by DK7ZB
VHF Antenna construction projects
in 28Ohm technique & more
Grundlagen
zu Optimierung & Konstruktion
von DK7ZB VHF yagis (in deutscher Sprache) from DH5FS's pages
Bauteile/Baumaterial
zum Selbstbau von DK7ZB VHF yagis u.a.
kommerzielle Site von Attila Kocis, DL1NUX

Berechnungen
kommerzieller u. Selbstbau-Antennen
Strahlungsdiagramme, mech. Abmessungen von UKW u. KW-Antennen
in deutscher Sprache von DM2BLE/DJ2ZS Construction of high-gain Quagi antennae
from N6NB's VHF website

Antenna Tracking Interface by AH6LE
and T/R sequencer, using Basic StampII
Radio Mods for EME, modifying
FT847/IC746/TS2000 for safe sequencing
Antenna Couplers for 144/432MHz
by Stefan Heck, LAØBY
construction details and test results

Optimizing VHF antennas
from SM5BSZ's pages

How to become an antenna guru
by Dan Warren, Rome Laboratory, USAF RX System Optimization
construction of single/multi stage preamps
from VE3KH's pages

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The Aurora Alarm Mark Haun's
senior engineering project : automated
optical/electronic detection of Aurora Taking the Earth's Magnetic Pulse
design for a homemade magnetometer
from the archives of UKSMG

• SAM Homepage •

Selbstbau eines Magnetometers auf Basis
eines preiswerten Fluxgate-Sensors
design & kit of an accurate homemade
magnetometer based on a low-cost
fluxgate sensor
The G3PLX Chirp Project
Passive measurement of HF range and
propagation using ionospheric sounders,
from ZL1BPU's "Modern Digital Modes"

Top · Main · Aurora · Weather · Solar Activity · MeteorScatter Sound · Software · MeteorData · WSJT
Monitor · DXpeditions · MeteorScatter · HSMS · VHF Links · InfoPages · eMail Europe · eMail NorthAmerica

Pages also available from

You're here : <http://www.qsl.net/dk3xt/hard.htm> updated Aug 14 th, 2005

Circuit diagram, place plan, PCB layout of a roger beep for meteorscatter, simple add-on, needs no wires to be cut, senses PTT line and adds beep when PTT goes inactive from DL4MEA's pages		Circuit diagram place plan, PCB layout of an improved version of LA8AK's audio up-converter for meteorscatter from DL4MEA's pages Further info on Motorola's MC1496P
Block diagrams of meteorscatter rigs		Circuit diagram DL3NCR's audio keying circuit for HSCW (in German language)
The "K" series Morse Keyer Website morse keyers for speeds up to 6000lpm by K1EL		The DUBUS Archives from DUBUS issues 1982 - 1992 : pdf-filed technical articles
TOP · BOTTOM
Circuit diagram audio keying circuit for high-speed CW keying interface for OH5IY's MS-soft Rig Modifications for high speed CW from PA5MS's (ex PE1OGF) pages		External RX Input modification for the Yaesu FT847 from DL4MEA's pages
Modifications of the IC202 transceiver series from DH5FS's pages IC202(E/S), IC402, FT225RD, D200 mods, manuals, tests, schematics from PE1HWO's pages Upgrading a conventional rotator controller, speed reduction Yeasu/Kenpro 1000 rotator from PAØPLY's pages Manuals and Mods by KB2LJJ Manuals and Radio Mods database		Modifications of FT736R by OH5IY tx delay & high speed keying Mods & improvements of the IC746 from GW8IZR's homepage Modification of the IC746 for 2m RX/TX separation from K7YVZ's homepage Modifications of FT736R / IC746 from IK6MLI's homepage
		Modifications of the FT225RD rx/tx split, transverter output, IF output from SM7OVK's pages
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Soundcard Interfacing by DL9AN USB/Ser/Soundcard interfaces Soundcard Interfacing by WM2U interfacing schemes for various radio models and Sound Card configurations		DSP-10 Project Amateur-radio 2mtr transceiver that can be built at home, operates SSB/FM/CW Features are tailored to operation with weak signals on VHF/UHF/SHF. The software part of this project can actually be used as a stand-alone DSP processor, with 200Hz/450Hz wide 600Hz center freq CW filters, spectral display, waterfall display, online information on moon az/el, doppler shift for your path & sun noise measurements by W7PUA
Digital Tape Recorder (DTR, DTR+) DF7KF's digital tape recorder for meteorscatter		Results of an elaborate test comparing the performance of the DTR, a modified tape recorder, and MSDSP by Maarten Broess N1DZ (ex PE1FIG, W1FIG)
TOP · BOTTOM

VHF construction projects VHF antennae, weak signal source, preamp, az/el digital readout, sequencer by W5UN		VHF construction projects by DL4MEA
PA3BIY LNA Design with ATF-54143 from PA2DW's pages		YU1AW's library of projects & articles VHF/UHF preamp design, power amplifiers, software
144MHz GS35b High Power Amplifier from DL4MEA's pages
Modifications to the W1SL 144MHz PA from GM4JJJ's pages		Simple water cooling of a 2C39a PA from GW8IZR's pages
W6PO 8877 144MHz kiloWatt Amplifier Reprint of the classic construction article from Eimac Amateur Radio Newsletter from W5UN's pages		Modified W6PO kiloWatt Amplifier from WB5APD's pages
144MHz 4CX800A High Power Amplifier from Svetlana Technical Bulletin #42		144MHz 2x4CX250B High Power Amplifier from LAØBY's pages
ITT AM6155/AM6154 amplifiers by N1RWY Mods, discussion, history, & pictures of the ITT AM6155/AM6154 amplifiers, can be modded for 144/222/432MHz, 300-500Watts out on each band see also : WZ1V's VHF Modifications Page		DL1IAO's list of hot links to homebrew PA projects
TE solid state amp by KJ6KO		ND2X's QRO pages list of hot links to PA projects with tubes of the Russian GS series HF/50/144/432MHz/23/13cm
TOP · BOTTOM
Power Amplifiers, Tubes & Related Items by Dr. David Kirkby, G8WRB		EIMAC Tubes Reference Data
Russian Tubes Data Sheets/Reference Data Russian tubes from <Tubes.ru>		Russian Tubes Data Sheets/Reference Data Tubes of the GI/GS/GU/RW/TH/YH/YL series from DF6NA's pages
Russian Tubes Data Sheets/Reference Data Russian tubes from ND2X's pages		Datenblätter von Röhren aller Art Beschaffungsservice von DJ4FU
TOP · BOTTOM
Coaxial Cable Data line losses, max power, diameters, halfwave/quarterwave lengths		How to cut phasing linesto length from GM4JJJ's pages
Stacking Yagi Antennas from G3SEK's "Amateur Radio Technical Notebook"		VHF/UHF Long Yagi Workshop includes information on the latest yagi designs by DJ9BV for 50/144/432MHz; from G3SEK's "Amateur Radio Technical Notebook"
High Performance Antenna Stack for 2m from S55WW's pages, also features homebrew projects of 14/144MHz transverter, 144MHz LNA		Online Microwave Antenna Book by W1GHZ "Fool-resistant" sequencer by W1GHZ for microwave transverters
VE7BQH 144MHz Long Yagi construction details of a portable 43ele yagi from W7GJ's pages		DK7ZB VHF Antennae by DK7ZB VHF Antenna construction projects in 28Ohm technique & more Grundlagen zu Optimierung & Konstruktion von DK7ZB VHF yagis (in deutscher Sprache) from DH5FS's pages Bauteile/Baumaterial zum Selbstbau von DK7ZB VHF yagis u.a. kommerzielle Site von Attila Kocis, DL1NUX
Berechnungen kommerzieller u. Selbstbau-Antennen Strahlungsdiagramme, mech. Abmessungen von UKW u. KW-Antennen in deutscher Sprache von DM2BLE/DJ2ZS		Construction of high-gain Quagi antennae from N6NB's VHF website
Antenna Tracking Interface by AH6LE and T/R sequencer, using Basic StampII Radio Mods for EME, modifying FT847/IC746/TS2000 for safe sequencing		Antenna Couplers for 144/432MHz by Stefan Heck, LAØBY construction details and test results
Optimizing VHF antennas from SM5BSZ's pages
How to become an antenna guru by Dan Warren, Rome Laboratory, USAF		RX System Optimization construction of single/multi stage preamps from VE3KH's pages
TOP
The Aurora Alarm Mark Haun's senior engineering project : automated optical/electronic detection of Aurora		Taking the Earth's Magnetic Pulse design for a homemade magnetometer from the archives of UKSMG
• SAM Homepage • Selbstbau eines Magnetometers auf Basis eines preiswerten Fluxgate-Sensors design & kit of an accurate homemade magnetometer based on a low-cost fluxgate sensor		The G3PLX Chirp Project Passive measurement of HF range and propagation using ionospheric sounders, from ZL1BPU's "Modern Digital Modes"