For some weeks now the Reading & District Amateur radio Club has been running the Advanced Amateur radio licence course on Monday evening’s mostly in Tilehurst with the odd evening taking place in Reading. On Saturday I was delighted to be able to attended the Saturday workshop Peter and I took the 9am train to reading we had time to call into Costa coffee for me and hot chocolate Peter’s favourite beverage sat we sat on the station concourse this is a delight in the summer but bitter cold this time of year but our hot drinks were excellent.
Their seemed to be no shortage of black cabs for hire at the train station and we took one to Caversham Park Village Association Hall we had a great time with Dr Allison Johnson G8ROG and David Rumens G4BOO we learnt about the VSWR meter and they work, how to make a 2m antenna without a tape measure using just using the maths and an MFJ- 269Pro analyser then connect it up to a 2m rig Avair AV-20 VSWR power meter 1.8-200MHz to see if you got it right
we also learnt how to find harmonics using a Radio Communication service monitor and with a 100 Mhz Digital Storage oscilloscope we learnt how to set our modulation correctly so as not to be over driving the transceiver. After lunch we learnt how to set up safely the Yaesu YA-30 antenna andto make a few contacts on HF with it. Over all I rate this as an excellent day’s training in a friendly and stress free environment and I did not feel uncomfortable asking questions.
Inside the BARTV group outside broadcast van
The West London Radio & Electronics Fair has been running twice a year for over 11 years. It started out at Epsom racecourse but the organisers soon ran out of room. The Event has been held at Kempton for the last 11 years. Whilst these sort of events have declined over the years, The Kempton rally has continued to grow year on year. Today, it is the only National Rally in the south and attracts most of the popular traders. Many of the clubs in th region take space along with flea market trade
The West London Radio & Electronics Fair has been running twice a year for over 11 years. It started out at Epsom racecourse but the organisers soon ran out of room. The Event has been held at Kempton for the last 11 years. Whilst these sort of events have declined over the years, The Kempton rally has continued to grow year on year.
Today, it is the only National Rally in the south and attracts most of the popular traders. Many of the clubs in th region take space along with flea market traders and charities. The CATS bring and buy sale is a permanent feature of the rally.
Peter 2E0SQL and I was invited to go to the rally with Ken M1SLH Barry G4AZN we had a enjoyable time meeting up with friends and making new ones at the radio rally – From the RSGB stand I treated myself to the Centennial Edition of the ARRL Handbook for radio communcation 2014 and I enjoyed visiting the BARTV group outside broadcast van
It’s been awhile since I last experimented with JT65 But I got the bug again and thought that I might like to focus on this mode for a few hours at least this mode does have the advantage that it has a reputation that it good for week signal radio communication JT65, developed and released in late 2003, is intended for extremely weak but slowly-varying signals, such as those found on troposcatter or Earth-Moon-Earth (EME, or “moonbounce”) paths. It can decode signals many decibels below the noise floor, and can often allow amateurs to successfully exchange contact information without signals being audible to the human ear. Like the other modes, multiple-frequency shift keying is employed; unlike the other modes, messages are transmitted as atomic units after being compressed and then encoded with a process known as forward error correction (or “FEC”). The FEC adds redundancy to the data, such that all of a message may be successfully recovered even if some bits are not received by the receiver. (The particular code used for JT65 is Reed-Solomon.) Because of this FEC process, messages are either decoded correctly or not decoded at all, with very high probability. After messages are encoded, they are transmitted using MFSK with 65 tones.
Operators have also begun using the JT65 mode for contacts on the HF bands, often using QRP (very low transmit power); while the mode was not originally intended for such use, its popularity has resulted in several new features being added to WSJT in order to facilitate HF operation
In the log:
IV3KAS JN65, EA5SU IN80, 9A5ZM JN86, IW6CZF, UY2IC, RA4FAU LO33, DG5VO JO17, IW6CZF JN33, YL2CA KO06, RN3QLM KO91.
SV2CLJ KN10, UA3SM LO04.