Geoff's Amateur Radio Page

I have held an amateur radio license since 1977 with the callsign G4GKH which has changed to GM4GKH since I moved to Inverness. I am active on all HF bands with a Yaesu FT-840 HF Transceiver and 144MHz on all modes with a Standard C5800 all mode 2 metre rig. The 'shack' cupboard in the picture (right) also houses the PC, printers powersupplies and broadcast satellite receivers/television. The MFI furniture store has its uses! You can also see my guitars, another hobby of mine, which you can find out a little more about by clicking on the 'Interests' button on my main page. Radio amateurs confirm contacts on the radio with 'QSL' cards. Mine is shown below.
Click on QSL Card for full size!

This RingSurf APRS Webring Net Ring
is owned by G4GKH.

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G4GKH Doublet Antenna (HF) - Construction info. Maths in MS Word 6.0 G4GKH Doublet Antenna
G0ICC "Wonder-Coil" (160/80/40) Construction info. Maths in MS Word 6.0 G0ICC 'Wonder-Coil'
Small Transmitting Loop Antennas by AA5TB Loop Antennae by AA5TB
Homepage of JF1OZL - simple site full of homebrew construction! JF1OZL Homepage
Defpom's Technical page - well worth a visit Defpom's Technical Page
Amateur Radio Pages UK Amateur Radio Pages UK
2000 RF Micro Devices Handbook in PDF Format RFMD Designer's Handbook
Bert's Radio Frequency Guide (What's on where) Radio Frequency Guides
MF Coastal and Maritime Stations 1608 to 4000 kHz www.coastalradio.greater-peterborough.com
AJ Potts' Web Links and UK Scanner Frequency Lists and much much more! AJP's Web Links and UK Scanner Frequency List
Shortwave Workbench - Frequency Listings Galore for avid listeners Shortwave Workbench
Have access to a communications receiver located in Illinois online Java Radio using RealPlayer
Have access to a communications receiver located in Portsmouth online Java Radio using RealPlayer
VHF/UHF Contest Tools VHF/UHF Contest Tools
Amateur Radio Utilities Maps etc... Amateur Radio Utilities Maps etc...
Amateur Radio Equipment CAT Software and Schematics Krasnodar Online
Send and receive eQSL Cards eQSL Card Link
Amateur Radio Callbook (QRZ) Amateur Radio Callbook (QRZ)
Ham Call Callbook Ham Call Callbook
Amateur Radio Rally Information Amateur Radio Rally Information
ISES Observed and predicted solar indices - continuously updated TO ISES OBSERVED AND PREDICTED SOLAR INDICES
Real-time Predicted Maximum Usable Frequency Conditions World-Wide WW Maximum Usable Frequency Conditions
Free Amateur Radio Software - Excellent Link! Free Ham Software
A plethora of Online Calculators to meet most design needs Discover Circuits Page
Excellent guidance on producing your own Printed Circuit Boards by SM0VPO PCB Guidance by Harry Lythall - SM0VPO
A massive list of Amateur Radio links from AF4K - software and much more! ASF4K's Massive Links Page
Amateur Radio related links from G0ITP - Packet SSTV and Homepages G0ITP Amateur Radio Links Page
Online Java calculator from Ohm's Law to Coil Winding and Traps plus loads more! Java Calculations and utilities
Check out the latest in Digi-modes from Nino Porcini's (IZ8BLY) site! IZ8BLY - Nino Porcini's Site
Many Amateur Radio links and resources from G3SEK's site G3SEK's site
Useful downloads and info from Nick Fedoseev (UT2UZ) - the Kiev-based author of MixW! UT2UZ Nick's site
Amateur Radio software for various Digital/Analogue Communications Modes QSL Net Software Links
See Colin, G6AVK's page. Colin and I go back to school days when we both got hooked on radio around 1975 To G6AVK's page
Worldwide Amateur Radio via Internet Gateway/UHF/VHF Amateur Radio Voice-Links via the Internet
eQSO Download Page eQSO Download Page
Location of GM4GKH (Map Centre) APRS on the ISS
Send Amateur Radio related E-mails to G4GKH Email G4GKH