G4MKI's Web Server Home
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Access to some pages on this site requires a password. Follow the Registration link in the side Navigation menu.
The AX25 Packet Modes and Radio Logs sections have moved to the Members Area.
Local Weather has now been expanded to include weather-display graphics.

Link to my RasPi Link to my eqsl profile IHERNE54 WX

Link to Current Ui-View Screenshot

RF Access to HMPTON:G4MKI-3 on 144.950MHz 1200 bd - when attended

Click left mouse button on photos to enlarge

HF Propagation

An excellent introduction to HF Radio produced in conjunction with the ARRL can be downloaded from here using the link below. It is a Microsoft Powerpoint presentation (.ppt file). This version of the presentation has UK Band Plans and Licence provisions added and a note on beacons.


If you haven't got PowerPoint installed on your computer (part of the Microsoft Office suite), then download Power Point Viewer from here. 

Download PowerPoint Viewer

International Amateur Radio Database

Enter G4MKI or MB7UEK in the boxes below, as an example.

QRZ callsign lookup:
Callsign lookups provided by qrz.com

Link to the electronic QSL Card Centre
Enter your callsign to see if you have an eQSL waiting!

I also receive paper QSL through the RSGB QSL Bureau

Link to my eQSL Card Album

G4MKI's Logs PSK Log JT65 Log JT9 Log FT8 Log CW Log

Amateur Radio Awards

Most amateur radio operators, at sometime in their life, join clubs or societies which are either local, national or international. Most of these organisations sponsor awards for construction (e.g building equipment) or promoting  operational expertise, using different transmitting modes and amateur frequency bands.

EPC ( The European Phase Shift Keying Club) promotes phase shift keying in the HF bands. 30MDG (The 30 Meter Digital Group) promotes digital activity - morse, rtty( teleprinting), psk etc. on the narrow amateur allocation just above 10MHz.

In the early days of the hobby, paper QSL cards (postcards) were exchanged between amateurs as written confirmation of each contact. To reduce postal charges as much as possible, national societies set up QSL Bureaux. The usual practice is still for individuals to send their QSL cards to their national bureau in batches (20 or 30) at a time, for example, bureaux then distribute them on their behalf locally and internationally, paying the postal charges from membership subscriptions. (QTH, QSL, QSO etc.  - QTH means: My home address. Q code was developed by CW (morse) operators as 'shorthand' - contacts between stations, over long distances are often barely audible against a background of 'noise' often caused by interference, solar flares etc.

Paper QSL Card


More recently, with the advent of the internet, a number of electronic bureaux have been established - eQSL and LoTW (Logbook of the World) are examples. These are FREE!

Amateurs interested in collecting proficiency awards are  able to submit paper or electronic confirmation ( sometimes both) of their contacts as evidence they have satisfied  award criteria.

Some organisations, eQSL and LoTW, require a copy of the amateur radio licence as part of the registration process, and give their members Authenticity Guaranteed status.

Use this link to enter my profile page at eQSL

Other clubs, such as EPC, 30MDG and DMC download award application software to their members, so that comparison can be made by the Award Manager with the club membership database and the members electronic logbook. Applications can then be made over the internet. This again is a FREE service to club members. ( Membership is usually free too!). The contribution made to Amateur Radio by YL and XYL operators. YL means 'young lady' and XYL, wife, has never been in doubt. They are positively welcomed to all aspects of the hobby.

My First HF Rig - Yaesu FT101E

My Latest Rig - Icom IC-7300

Datamode Operation with the IC-7300

Two methods of achieving Frequency Shift Keying are described in the User Manual: Using the Accessory Socket and Remote socket at the back of the rig (connected to a sound modem, such as SignaLink) or, using a USB serial connection from the USB socket, next to the Accessory socket, which has the advantage that no external sound modem is required...BUT, in order to acieve the latter, you must first download and install the Serial Driver and Driver Installation Guide from Icom. The Installation Guide provides detailed instructions for Windows 10, 8.1 and 7. Having installed the driver, look for Silicon Labs CP210x USB to UART Brige (COM 11) in Device Manager,Ports(COM &LPT) and check the Port Settings. They must match the setup details in the software package you are using eg. WSJT-X -File/Settings/Radio. You will probably have to change the Data bits to 8 and the Stop bits to 2 in the computer Device Manager for the new COM port. It works very well for me!

 Link to My Awards

MB7UEK APRS 144.800MHz Coverage

What is APRS?

Link to EPC Website

VOIP Linking

G4MKI-L 430.0125MHz Coverage (VoIP linking worldwide - internet gateway)

My UHF RF < > Internet Gateway which can be accessed from a mobile or hand held transceiver anywhere within the coverage area shown on the above map. It provides local amateurs with a facility to link to other amateurs worldwide or locally. The -L suffix after the callsign indicates a radio link station, -R indicates that it is an amateur voice repeater station, intended primarily for mobile to mobile voice linking.  Most countries have networks of amateur repeater stations on VHF, UHF and SHF frequencies to enable mobile to mobile operation over difficult terrain. At these frequencies radio links are line of sight with an effective range to the visible horizon over flat terrain. Repeaters are usually sited on the highest points locally in the same way as local TV transmitters and Cellular Telephone Network Masts (Mobile phones are radio transceivers! - using more or less the same technology that Radio Amateurs have been developing with packet radio error correcting transmission protocols since the 70's).

A typical amateur rotatable aerial installation for HF, VHF and UHF operation

Either EchoLink or eQSO (similar to Skype) software is used in conjunction with a PC soundcard, and a suitable interface to switch the radio transceiver between receive and transmit. Voice over IP protocol (VoIP) is used for the speech and  signal processing carried out by the soundcard.

Links to particular stations can either be made from a computer keyboard or from a radio transceiver using a touch-tone keypad. Each station using the system has both a registered name, usually the Station Callsign and a registration number. The software is only available to verified licenced amateurs, although shortwave listeners with restricted user rights are encouraged to participate using eQSO software.  Amateur News Bulletins are also carried on the system for most National Radio Societies - the ARRL in the USA and RSGB in the UK are examples.

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