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CATS Radio Links | |
CATS Internet links are grouped under the following headings:
| Antennas | Broadcast | National Societies | Local Clubs | Events |
| Historical & Vintage | Manufacturers | Operating | Publications | QRP |
| Satellites | Software | Suppliers | Technical Topics | Miscellaneous |
| AA5FR Rotor | Satellite tracking hardware |
| AC6V's Antennas Links | Literally hundreds of antenna links |
| Antenna Software | Many links to other software sites by AC6V |
| Butternut Antennas | Well-known antenna manufacturer |
| Coaxial Collinear | Interesting design for 432 MHz - not tried by G3WZK |
| Cushcraft | Well-known antenna manufacturer |
| DK7ZB | Homebrew antennas |
| EZNEC | Antenna design software by W7EL |
| Hy-Gain | Well-known antenna manufacturer |
| Magnetic Loop | (G4FON site) |
| Magnetic Loop | (GW0TQM site) |
| Magnetic Loops | (K9ESE site) |
| Moxon Antenna Project | Inspiring antenna project completed in YU-land |
| Phoenix 4 metre Dipole | Simple practical design |
| Slim Jim | Not an amateur antenna, but easily scalable |
| Slim Jim (French) | Good diagrams - so OK even if you can't speak French |
| SOTA Beams | Manufacturer of portable HF, VHF and UHF antennas |
| Spiderbeam Antennas | Manufacturer of portable HF antennas |
| VHF antennas (in French) | Links for 6m and 2m antennas |
| W2BRI Magnetic Loop Antennas | Includes practical design for 80 metres (or 75 m in the US) |
(Checked for broken links 20/10/08)
| A.T.V | Aerials and Television |
| BBC Network Status | Up-to-the-minute information |
| Digital Multiplex Listings | Freeview etc |
| DXTV | Todd Emslie's TV DX Site from VK land |
| Freesat | Main site for satellite equivalent of Freeview |
| Freeview | Free digital TV and radio |
| UK Broadcast Transmission | Interesting collection of both historical info and future plans |
(Checked for broken links 05/12/08)
National and International Societies:
 |
RSGB |
| RAOTA | Radio Amateur Old Timers' Association |
 |
ARRL (USA) |
 |
New Zealand ART |
 |
German DARC |
 |
Wireless Institute Of Australia |
 |
Spanish National Society |
| JARL | Japanese National Society (in English) |
| SARL | South African National Society |
| GARS | Gibraltar National Society |
| HARTS | Hong Kong National Society (in English) |
| CARS | Cyprus National Society (in English) |
 |
IARU Region 1 |
(Checked for broken links 30/09/08)
| BDARS | Bromley & District ARS |
| CARC | Crawley ARC |
| CPREC | Crystal Palace Radio & Electronics Club |
| Caterham RG | Caterham Radio Group |
| CVRS | Cray Valley Radio Society |
| DDRS | Dorking & District RS |
| HARC | Horsham ARC |
| Mid-Sussex ARS | Mid-Sussex ARS |
| RATS | Reigate ATS |
| Southgate ARC | Southgate ARC |
| SRCC | Surrey Radio Contact Club |
| SCRS | Sutton & Cheam RS |
| W&DARS | Wimbledon & District ARS |
| Region 9 Clubs | Other local clubs (RSGB Site) |
| Radioclubs.net | List of RSGB-affiliated clubs. CATS entry |
| and not so local .... | |
| CVRC | Crescenta Valley Club (California) - twinned with CATS |
| YoungHam | Young Ham Website |
(Checked for broken links 30/09/08)
| Elvaston Rally | Cancelled for 2008 |
| Friedrichshafen | International Amateur Radio Exhibition |
| International Museums | List of Museums registered for 2009 |
| Kempton Park Rally | West London Radio & Electronics Show |
| Leicester Amateur Radio Show | Leicester Amateur Radio Show |
| Rally Information | What's on and where in the Amateur calendar |
| Rally Information | Further information about what is on and where |
| VMARS events | Military Radio Events |
(Checked for broken links 17/09/08)
| 1945 Wireless World | Includes link to historic 1945 proposal by Arthur C Clarke for geostationary satellite communications |
| 1950's British TV Nostalgia | Not technical, but interesting info on 1950's programming |
| Andy's Valve Website | Restoration of old electrical and electronic technology |
| Antique Radio Classified | Monthly US publication for buyers and sellers of old radios etc |
| Antique Radio Supply | Links to sources of supply |
| Aurora Design | Standards converters of obsolete TV systems |
| Bakelite World | Masses of information on old wirelesses |
| Brenell Tape Recorders | Also contains info on Ferrograph, Truvox, etc |
| British DX Club | Guide to radio museums & vintage radio in the UK & Ireland, by county |
| British Vintage Wireless Society | Self-explanatory |
| British Vintage Wireless & Television Museum | All about the Dulwich museum lovingly created and maintained by Gerry Wells ( and others) |
| Bush DAC90 | Classic set - but not rare - got one myself |
| Carlos Miranda Radio Collection | Relatively small collection |
| Classic Wireless | Info on many vintage wirelesses |
| Dorchester Radio Station | Station built by the Marconi Company for the British Post Office's Imperial Wireless Chain during 1925-26 |
| Droitwich | YouTube clip of Droitwich's construction |
| Early TV | Load of fascinating historical material on this US site |
| Eddystone | User Group |
| Ferrograph Tape Recorders | Lots of info including downloadable manuals |
| Flypaper | Interesting WW2 operation involving radio amateurs |
| Heathkit HW8 | Info on popular 4-band QRP transceiver |
| Heathkit Shop | Disappointing site with very little for sale, despite the name |
| Home Radio of Mitcham | Browse parts of the old catalogue and dream of times past ... |
| International Marconi Day | Includes links to other Marconi sites |
| John R's Mellow Pages | Home-constructed TVs |
| Jonz Valve Page | Info on vintage television sets and wirelesses |
| Light Straw | British telephone memorabilia |
| Marconi Calling | Content-rich site with interesting photos and recordings from radio's earliest days |
| Marconi Documents | Index of historical Marconi-related documents |
| Mikey's Vintage Technology Page | Diary of 8 years repairing TVs |
| Old Computers | On line museum since 1995 |
| Old Radio World | Everything from crystal sets to regenerative receivers |
| OZ6GH | Lots of interesting info from the era of "Wireless World" (in English)- plus Danish stuff |
| Past Times Radio | Vintage radios and projects |
| Philips' Diagrams | Over 150 diagrams |
| MSF Rugby | Fancy a mast 180 m high ... |
| Old Radio World | Circuit diagrams and service manuals for radio sets, vintage radios, tape recorders, amplifiers, TV sets, record players, etc. |
| The Radar Pages | All you ever wanted to know about British air defence radar |
| Radio Caroline | The cyber home of the Ross Revenge |
| Radio Constructors' Circuit Archive | Transistor TRF circuits from Radio Constructor and elsewhere |
| Radio Constructors' Circuit Archive | Valve TRF circuits from Radio Constructor and elsewhere |
| Radio Constructor Info | Site covering the now-defunct magazine |
| Radio Picture Gallery | Pictures of and links to vintage wirelesses |
| Rugby | Wikipaedia entry for Rugby radio station |
| Rugby Radio | The history of Rugby (part of a site about low frequency (LF) amateur radio |
| R1155/ T1154 | Lots of info on this Rx/Tx combination used in the Lancaster and Sunderland aircraft |
| The Telephone File | The history of UK customer telephone apparatus & systems |
| Transistor Museum | The history of transistors |
| UK Vintage Radio | Repair and restoration |
| The Valve Page | Radios - televisions - test equipment |
| Valve & Tube Supplies | Supplier of thermionic components |
| VIs | Radio Security Service - Voluntary Interceptors in WW2 |
| Vintage components | Specialist vintage components |
| Vintage European Circuit Diagrams | Circuit diagrams and components for vintage wirelesses |
| Vintage & Military ARS | The VMARS Technical Information Service |
| Vintage Radio & Electronics | Articles from Radio Constructor and other vintage electronic constructor magazines and books |
| Vintage Radio Emporium | A virtual radio shop that has mysteriously moved from the past to the web. The shop keeper lives in England and is particularly fond of crystal sets. |
| Vintage Technology | Lots of interesting stuff (not just radio) from South Wales |
| Virtual Valve Museum | Info and pictures of a wide range of thermionic devices |
(Checked for broken links 23/10/08)
| Adat | Swiss maker of all digital transceiver |
| Alinco | Rigs |
| Bencher | Keys and (Butternut) Antennas |
| C&K | Switch Manufacturer |
| Caddock | Precision resistor manufacturer |
| Cushcraft | Antennas |
| Fluke | Test Gear |
| G4TPH | Portable QRP antennas |
| Heil | Headsets and mikes |
| Hilberling | Radio gear manufacturer, including amateur |
| Hy-Gain | Antennas |
| Icom | Rigs |
| IK-Telecom | Finnish manufacturer of antennas for 6m, 4m, 2m and 70cm, plus professional gear |
| Jensen | Danish capacitor manufacturer |
| Kenwood | Rigs |
| microHAM | High end DX accessories |
| Microtelecom | Italian SDR manufacturer |
| Philips | PMR rigs |
| RFSpace | SDR manufacturer |
| RM Italy | Interesting manufacturer of RF gear |
| F9FT (formerly Tonna) | French antenna manufacturer |
| Ultrabeam | Italian antenna manufacturer |
| Vertex Standard | Yaesu parent company |
| Winradio | Radio communications equipment manufacturers |
| Yaesu | Rigs |
| Yaesu Museum | German site |
(Checked for broken links 16/09/08)
| 4 Metre Website | Self-explanatory |
| 6 Metre Group | UKSMG: dedicated to encouraging amateur radio operation on 50MHz around the World |
| 10 Metre Net | Home Counties 10m net every Saturday from 9pm (local) on 28.5MHz USB (28.6MHz if busy) |
| 50 MHz and up | The DK5YA VHF page |
| Amateur Radio and DX reference guide | from AC6V |
| Beacon List (HF) | |
| Beacon List (Over 30 MHz) | |
| Callsigns | Detailed explanation of UK callsign system |
| Callsigns II | Similar to the above |
| Callsigns III | List of callsign groups issued by approximate date since 1920 |
| Contests (HF) | RSGB Calendar |
| Contests (VHF) | RSGB Calendar (need to click on Calendar on the RSGB page) |
| Contests (worldwide) | SM3CER site- comprehensive contest calendar |
| Czech repeaters | |
| DL7DF | Botswana dxpedition |
| DXFC | A site for DXers who like to travel |
| DX Summit | Real time information about DX station activity |
| Echolink | |
| eQSL | |
| FISTS | International Morse Preservation Society |
| FOC | First class CW operators' club |
| French Repeaters | |
| GB3CCX | Gloucestershire Repeater Group |
| GB3VHF | |
| Great Circle Maps | Great Circle Maps Based On Any Location |
| IARU QSL | IARU list of QSL bureaus |
| IOTA | |
| Locate the Distance | Calculates distance between Locator squares |
| Locator finder (1) | AMSAT site |
| Locator finder (2) | Google based |
| Locator finder (3) | Starting from UK post code |
| LOTW | ARRL log of the world |
| Lynx DX Group | Invalid "amateur" operations |
| MC0SHL | Strumble Head DX and Contest Group |
| Mobile Operating | Useful site run by K0BG |
| Operating Practice | Guide by ON4WW |
| QRZ.com | Info about individual amateur radio stations worldwide |
| Prefix List | RSGB list |
| Propagation | Amateur Radio Propagation Studies from DF5AI |
| SOTA | Summits-on-the-air |
| SpaceWeather | Information on solar storms, aurorae etc |
| Spanish Repeaters | 144 MHz |
| Spanish Repeaters | 432 MHz |
| Spratly | Proposed dxpedition on 2009 |
| Syria DXpedition | |
| Telegraph | Vast collection of material on CW and telegraphs by W1TP |
| UK QRM Group | Yahoo user group on QRM (requires group membership) |
| UK Repeaters | Comprehensive up-to-date information |
| WAE | Worked all Europe |
(Checked for broken links 01/12/08)
| CQ-DL | In German |
| CQ-VHF | US magazine |
| Dubus | Magazine for VHF and up in English and German |
| Elektor | Electronics magazine published in 9 languages |
| EPE Magazine | Everyday Practical Electronics |
| Funkamateur | In German |
| FunkTelegramm | In German |
| Ham-Mag | New On-line Ham Radio Magazine |
| Practical Wireless & Radio User | Site covering both magazines |
| QST | ARRL magazine |
| Radio-REF | In French |
| Six News | UKSMG publication |
| UKW Berichte | In German |
| VHF Communication Magazine | For Radio Amateurs and Professional RF Communications Engineers, covering VHF, UHF and Microwaves |
(Checked for broken links 10/12/08)
| AMQRP | American QRP Club |
| FPQRP | Flying Pigs QRP Club |
| G-QRP | GQRP Club |
| HCQRPC | Home Counties QRP Circle |
| QRPARCI | QRP Amateur Radio Club International |
| W0CH QRP World | Lots of QRP info from the US |
(Checked for broken links 01/12/08)
| AMSAT | Main AMSAT site |
| AMSAT Satellite Status | Information on OSCAR (but not updated since April 2006) |
| Britain's Moon Shot | BBC news item |
| Delfi-C3 | Dutch nano-satellite project |
| ESA | European Space Agency |
| GEO | Independent Organisation for Weather Satellite and Earth Observation Enthusiasts |
| Heavens Above | On line tracking of the ISS and other spacecraft |
| Orbitron | Satellite Tracking From Poland, updated daily or better |
| P3-E | AMSAT-DL's P3E -satellite project |
| P5-A | AMSAT-DL's Mars project |
| Surrey Space Centre | University of Surrey site |
(Checked for broken links 05/12/08)
| Beacon Monitoring | Downloadable monitoring software |
| CW Skimmer | Wideband CW decoding programme |
| DX Lab | Dxing and other software |
| Echolink | |
| Radio Mobile | Propagation Simulation Software from VE land |
| Virtual Legacy Software | Rig control software |
| WSJT | Amateur digital VHF/UHF communications software |
(Checked for broken links 05/12/08)
CATS are sponsored by SYCOM trading please take a look at their web site for good value for money components
Other suppliers in alphabetical order:
| Baby Catalogue | Cheapest source of 6" x 4" QSL card holders! |
| Barend Hendriksen (Netherlands) | Useful mail order for hard-to-get components, including ICs |
| Belmont Communications | Amateur and professional two-way radio |
| BHI | Amateur noise reduction |
| J Birkett | Surplus components |
| Bowood Electronics | Electronic components |
| CPC Farnell | Major component supplier |
| Digi-Key | Components |
| Display Electronics | Surplus electronics |
| Electrovalue | Components |
| ESR Electronic Components | Components, Velleman Kits |
| EZ Hang (USA) | Aerial rigging catapult |
| Garex Electronics | Accessories, components, EMC |
| G4HFQ Software | Amateur radio software |
| Golledge Electronics | Quartz Crystals etc |
| HamStuff by W7NN | Various, including QSL card holders |
| Haydon Communications | Rigs and accessories |
| HF Projects (USA) | Range of HF kits, modules and projects |
| Hofi | German supplier of antennas and towers |
| ILink Boards | Echolink and other interfaces |
| iQSL | QSL Card supplier, including on-line design |
| JAB Electronics | Components company owned and operated by Radio Amateurs Primarily for Radio Amateurs & Hobbyists |
| Jaycar Electronics (Australia) | Kits and bits. |
| Juma | Interesting selection of kits from OH land |
| LAM Communications | Rigs and station accessories |
| Mainline | Supplies include variable capacitors and slow motion drives |
| Marcucci (Italy) | Rigs and station accessories |
| Martin Lynch | Rigs and all station accessories |
| Maplin | Major component supplier |
| Mechatronics | Mechanical & electronic components, stainless steel fixings |
| Memphis Amateur Electronics (USA) | Rigs and accessories |
| Microwave Components | G3WDG microwave site |
| Mode Components | Components |
| Nevada Radio | Amateur rigs and antennas, non amateur gear |
| Norcall | Professional two-way radio |
| OzGear (Australia) | Equipment and components |
| Radio Structures Ltd | Towers, masts and antennas |
| Radio Works (USA) | Cables, antennas and accessories |
| Radioworld Communications | Rigs and all station accessories |
| Rapid | Electrical and electronic |
| RF Parts (USA) | Specialist RF Parts. Amateurs supplied min order $25. |
| RF Source (Greece) | Useful RF Modules |
| RS Online | Major component supplier |
| Sandpiper Aerials | Aerials and accessories |
| SDR Kits | G0BBL SDR kits |
| Sharper Components | Obsolete components |
| Spectrum Communications | Amateur radio kits, including transverters |
| Technical & Scientific | Surplus Equipment & Information |
| Thunderpole | Mainly CB gear |
| Toolbank | Supplies Q-Max chassis cutters and other stuff |
| Tube Shop | On-line supplier of thermionic valves |
| UES&S Ltd | Surplus electronics |
| Vine Antennas | Supplier of rigs and antennas in GW land |
| Walford Electronics | Amateur radio kits |
| Waters & Stanton | Rigs and all station accessories |
| Wescom (Ireland) | Experimental and amateur radio (also motor homes) |
| WH Westlake | Cables and connectors |
| Wood and Douglas | Professional communications (ex amateur supplier) |
| Worsley Communications | Rigs and masts |
(Checked for broken links 01/12/08)
| 4m Transverter | ARAC (Andover Radio Amateurs Club) design |
| 13cm Downconverter | Design from G0ORY |
| 24 GHz Initiative | The UK Microwave Group 24GHz Initiative |
| AC6V Technical Reference | Many links on a wide range of topics |
| Artificial Earth | Design by GD4EIP |
| BATC | Amateur TV (including ATV streaming) |
| BATC Forum | Amateur TV Forum |
| BITX 20 metre transceiver | An easy to build 6 watt SSB transceiver for 14MHz |
| Cool Circuits | Interesting collection of circuits, but mainly non radio |
| cqham.ru | Russian site - click on union flag for English version |
| Datasheet Archive | Claims over 6 million electronic component datasheets |
| Datasheets | Various, incl Tonna antennas |
| D-Star | UK D-Star Interconnect site |
| Electrolytic capacitors | Reforming |
| Electronics 2000 | Information |
| Frank's Hobby Corner | NL land (PA0FBK) |
| G4BAO | Microwave site |
| G4JNT Site | Andy Talbot |
| GB3HV | Info on ATV repeater |
| H-Mode | H-Mode Mixer Front end |
| Harry's PDF Page | Many radio, ham radio and electronics PDF files from SM land |
| Heatsinks | All about heatsinks and heatsink design |
| Hobby Circuits | Good collection of useful circuits |
| HPSDR | High Performance Software Defined Radio |
| Impedance Matching (1) | On-line impedance matching network design. Try it! |
| Impedance Matching (2) | More on-line help |
| "In Practice" | G3SEK |
| ezscreen | IP ratings (water and dust proofing etc) |
| K5LXP | Constructional projects |
| LF Amateur Radio | G3NYK site |
| L Match | How to design an L-Match circuit |
| Microwavers | UK Microwave Group |
| mods.dk | Modifications and manuals |
| N1SU | Lots of stuff, including digital voice software |
| Oscilloscope | Make a 'scope designed by N4BCU |
| PA0FRI | Lots of technical Info |
| Prescaler kit | Simple divide-by-ten circuit to (500 MHz to 50 MHz) |
| Radio waves below 22 kHz | VLF and ELF |
| RF Design | Journal for RF design engineers |
| Rigpix | Rig photos from SM land - 3660 radios at the last count |
| SCART Club | ATV in Southern England |
| SDR | Software Defined Radios |
| SDR 2 | High Performance Software Defined Radio |
| SDR 3 | FlexRadio: Software Defined Radios for Amateur Radio Use |
| SDR 4 | Open source software defined versatile radio board |
| TAPR | Amateur Digital Communications Organisation |
| Transistor Pinouts | Common legacy device pinouts |
| ULF | Ultra Low Frequencies |
| WA1MBA | A domain for microwave amateur radio |
| ZL1BPU | Lots of info on communications modes |
| Z-match | Z-match Design from VK land |
(Checked for broken links 02/12/08)
| Airband Frequencies | VHF / UHF Airband Frequencies in use within the UK |
| Airband Online | UK VHF Airband Transmitter Sites |
| Bletchley Park | Bletchley Park National Codes Centre |
| BPL Noise | BT Vision Powerline Adaptor Interference - YouTube Recording |
| CW Ring Tones | For mobile phones |
| eHam.net | Ham radio on the net |
| Electromagnetic Pulse Bomb | Military use of EMP |
| G7FEK | VOIP gateway etc |
| HF Projects | tbc |
| HMS Collingwood | Royal Navy radar and communications museum |
| HS0ZEE | Experiences of living in Thailand, including amateur radio |
| Joint Radio Company | Spectrum management |
| NOT the GB2RS News | A humorous site, sporadically updated |
| Ofcom | Ofcom licensing page |
| Palau | Rent a radio shack in Palau for your holidays |
| RAE | Old RAE exam papers |
| Robot Wars | Radio and antenna considerations |
| Sam's Telecoms Documents | eg Post Office N diagrams |
| Superfi | Like hi fi, only better (allegedly!) |
| Telecoms Heritage Group | Mainly Post office era, including Strowger |
| Transmission Mode Recordings | A collection of recordings of various transmissions, including: Hellschreiber, PSK31 and PSK125, DominoEX and RTTY. |
| Trinity Wharf | GB2TBW |
| TAPR | Tucson Amateur Packet Radio |
| VHF Communications | Construction-orientated publication for Amateurs and Professionals, covering VHF, UHF and Microwaves |
| Wireless Waffle | Describes itself as "a whole spectrum of radio related rubbish" but is actually quite interesting and always topical. Lots to read! |
| WWII - War Time Radio | Some interesting facts on ULTRA |
(Checked for broken links 05/12/08)
Page updated 07/01/2009 by G3WZK