G4HJW Homepage
- Greetings. For those who don't me, my name is Bernie Wright, and I live near Cambridge, in England.
- Most of the following links are radio/electronics oriented, but not all
- If required, I can be e-mailed at: bernie (at) earf.co.uk - I will try to reply to all sensible mailing
*New*
-
10 GHz
Narrowband:
- the line of sight band that isn't
A (re) introduction to 10 GHz via satellite LNBs
Measurements on two well known waveguide filters
Gallery of satellite LNB modifications
Some audio and video clips showing multipath/doppler propagation effects
GB3CAM 3cm and
1.2cm beacon site
Low cost
construction using surplus satellite LNBs (Sheffield talk, 2008)
Microwave
construction on a shoestring (Sheffield talk, 2008) a
few
How stable
are the free-running LO's in Ku band satellite LNB's?
Quasi high LNB LO
frequency stability - with
no modification to LNB!
Bawdsey
10 GHz receiving station
Build
details for 3cm converter kit based on above
3cm eme reception -
dabbling my feet
PLL LNBs -
using external OCXO references
-
Optical:
- Much needs adding here.
Nanowave
transceiver - Finningley uwave
RT 2012
Cambridge
(Wyton) low power red and IR beacons
Use of
quartz tuning fork resonators at 32 - 100 kHz - for
cloud bounce propagation
Optical
red/IR 3mW 15kHz FM optical beacon
NBFM/AM/SSB baseband/subcarrier transceiver
A
portable light-proof Test box
Simple
down-convertor for sub-carrier working
Current
v voltage mode detector comparison
A pair of 4
khz usb transceivers
Miscellaneous
radio:
14.4MHz TCXO upward
frequency mods
Small temperature
controlled oven
HF frequency selective
combiner
Reduced bandwidth
DATV exciter (146.5 MHz)
An analogue, fast
responding, high resolution signal strength meter for
QO-100
80m Weaver
receiver and transceiver - also known as '3rd
method'
23cm PA using
Erikson PTF10137 sm device
Whistler ELF receiver
Solar flare VLF receiver
Small loop antennas (magnetic loops)
RF Capacitors - plumbing the depths
FM1100 E-band conversion to F-band (54-68MHz)
FM1100 as synthesised LO source for an HF transceiver
2.4GHz 802.11b radio survey of Little Wilbraham
Slick looking panels - or posters using A4 inkjet transparencies
80m SDR
dongle - Finningley uwave RT 2010
Millenium shed:
Radio Astronomy topics:
18m dish - 408 and 1420 MHz focus box .....Archive, with missing links
Interferometry at 11GHz using satellite TV LNBs and dishes
General:
There are people whom one loves immediately and forever. Even to know they are alive in the world with one is quite enough.
Nancy Spain
