XLT125 Scanner Repair

Club member Eddie was disappointed when the centre pin of his antenna broke inside his Uniden UBC XLT125 radio scanner .

Rather than send the radio to landfill, Eddie decided to repair it. After asking advice from other club members, he purchased a replacement BNC aerial chassis mount socket from RS , The job took took about two hours to complete, and the finished result looks very impressive.

Nice work Eddie!

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Understanding E Layer Propagation: From the Regular E Layer to Sporadic E at VHF

Radio propagation through the ionosphere is one of the great gifts nature gives to anyone with an antenna and a receiver. While most of us are familiar with the F layer's role in long-distance HF communication, the E layer — and especially its unpredictable cousin, Sporadic E — deserves its own detailed look. This piece covers both the traditional, well-behaved E layer and the wild, VHF-opening phenomenon known as Sporadic E, with an eye to what it means for CARC members working HF and VHF from here in West Sussex. Part One: Traditional E Layer Propagation What Is the E Layer? The E layer is a region of the ionosphere located roughly 90 to 150 km (56 to 93 miles) above the Earth's surface. It sits below the F layer and above the D layer, forming one of several ionized layers that make radio propagation possible. The "E" designation comes from the original naming convention used by physicist Edward Appleton, who studied the layers using "electric" wave ...

Welcome to Crawley Amateur Radio Club

The Crawley Amateur Radio Club (CARC) was formed over 40 years ago and moved into its present premises Hut 18 Tilgate Forest Recreational Centre, in the early 90’s. We are an affiliated club of the RSGB. Membership, currently standing at around 55, ranges from a member in their twenties to several octogenarians. The monthly talks and presentations cater for a diversity of technical backgrounds from absolute beginners to well-qualified professional engineers. Members of note include a past President of the RSGB the late John Graham G3TR, and the late Ron Vaughan G3FRV (now VK6RV), General Manager of the RSGB in the late 60’s. Current members include Stewart Bryant, G3YSX (past President of the RSGB, and currently RSGB Chair), Caspar Pierce (Winner of the RSGB Kenwood trophy), and Eugene Sully G0VIO of Big Brother fame who does much to actively promote interest in radio communications and the Sciences in general. Facilities at the spacious Clubhouse include: A contest-grade radio station...

New (Free) Map Program for Amateur Radio

Some of you may be familiar with the software of Simon Brown, G4ELI. While still working full-time he was the creator of the then free Ham Radio Deluxe (HRD) suite of software which he sold a few years ago. Since then he launched the excellent SDR Console software which is a "must have" for anyone experimenting with SDR Radios. I'm sure some of you this installed on your shack PCs. Less well known is a great little utility simply called "Simon's World Map". The newly released V1.5.1 is available for download here https://www.sdr-radio.com/world-map As ever with Simon's software, it's richly featured with satellite tracking and rotator control. The presentation is widely customisable allowing overlays such as ITU or CQ Zone, sun and moon overlays and space weather information plus greyline visualisation. Take a look as the price is right, FREE. Regards Mike, G0KAD

Crawley Amateur Radio Club

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