Tag: lefars

LEFARS and SNBCG Field Weekend.

The August bank holiday provided a great time to play some radio, and join forces with another club for the weekend. Many of team SNBCG are also members LEFARS, and with an active portable group, this was set to be a busy weekend.

I arrived on Friday evening with Peter G0IPA and Dave G7UVW to setup the initial masts, we put up the 144 MHz beam  (9e + mast head LNA).

The 18 MHz 3e beam was recently constructed and required some further testing, although initial results were very promising.

The 7 MHz vertical was constructed from push up poles and 8 radials.

A BBQ was planned for Saturday evening, with Ron G6LTT, Karen and Sharon doing a great job in feeding the masses. Dave M0MBD also provided a very nice Chili con carne with rice. We also had burgers and sausages and some salad, a really nice and very welcome meal. The weather was excellent, with temperatures getting to 27c in the day, and not falling below 18 in the evenings and ideal for camping. The turn out from both clubs was excellent with members travelling from far and wide to partake.

A WSPR transmitter was setup for the weekend using the QRP Labs with a 200mW output into some wire. This provided an indication of the band conditions and was active throughout the weekend.

John M0IDA dropped in on Sunday with his arrow satellite antenna and provided a demonstration on working through satellites.

Altogether a very successful weekend with members operating on 3.5, 7, 10,14, 18, 21, 24,50 and 145 MHz over the weekend, making close on 1,000 QSO in 80 countries.

Further pictures from the weekend are available here.

LEFARS Field Weekend

Once again members of the LEFARS came together at the Rainbow and Dover PH near Harlow to play some radio. George M1GEO and Chris G8OCV had recently serviced a tri band beam from Cushcraft A-3S donated by Bill G0BOF to the SNB group. The event this weekend was its first field day outing, and it performed very well. The antenna worked as a 3e trapped beam on 28, 21 and 14 MHz bands.

The boom length of the antenna is just 4.17m and the longest element length is 8.45m. You can download a manual for the antenna here.

The 3e beam was supported on the 12m SCAM pump us mast, as was the 3.5MHz dipole. We also operated on 50 MHz and 70 MHz using a slim Jim and dipole.

Using 2 x Icom 7100 for HF, one connected to the Cushcraft beam, and the other on 70, 50 or 3,5 MHz. The amplifier was a solid state HAL 1200 delivering 400w to the antenna,

DCIM100MEDIADJI_0094.JPG

7 MHz was also in use giving John the chance to try out his newly acquired Icom 7300. The new Icom is proving very popular, with 3 club members recently investing in this new mode.

27904200764_4c40d3a8e2_kOver the weekend we made close on 300 QSO, and combination of CW, Phone and Data modes.

Here you can see Fred G3SVK working a few on 14 MHz CW.

You can read more about LEFARS and GB0SNB both active clubs in the Essex area

 

 

 

 

 

21 MHz 4e Beam Part #3

You can read Part 1 and Part 2 of the project

Part 3

Members of the Havering ARC took part in the LEFARS radio event over the bank holiday weekend 23/24/25 May provided the ideal opportunity to test the beam. George M1GEO and Chris G8OCV provided the 12m SCAM mast and so the fun began. The club operated from a farm site in Harlow, giving us enough space to test even the most ambitious projects. As described in parts #1 and #2 the antenna has a 5 meter boom, and although it isn’t too heavy it still provides a challenge lifting this onto the mast.

On the tower

 

Once again a quick VSWR check using the MFJ antenna analyser suggested it was ready to go, and so the next phase was to pump up the mast. The Scam provides 12m (45ft) of elevation, and provides a suitably robust (heavy) construction that makes it a firm favourite for our HF field days.

Its up

The station was a Kenwood TS990 and Explorer 1200 Amplifier. Here is a picture of George M1GEO working a pile up.

George M1GEO

Over the course of the next 3 days we were able to test the antenna, band conditions seems reasonable on the day and improved early evening on most days. We found the directivity to be good, and pointing towards Japan in the early evening provided a pile up of JA’s calling us.

Some highlights VU3DMP Chetz from India

Some really nice calls from Japan as well including JJ1LWA Hal near Tokyo using 200w and 3E beam

We also found conditions very good into the USA late evening and working West coast with signals 59+ was quite a surprise. It was also nice to see the GB2LRS station generating some interest on the HF band, with one USA station suggesting the phonetics should be GB2 Loud Radio Station !

The USA and JA pile ups were quite a surprise, listen to one here and see what you can pull out.

The the weekend finally coming to an end on Monday we had worked 600 stations in 58 countries, the highlights being A9 Bahrain, C6 Bahamas, BY China, VU India, HI Dominican Republic, EP Iran, P2 Papua New Guinea, KL Alaska, XE Mexico, and YB Indonesia. The top two countries in the log were 376 Q into USA and 71 into Japan.

I think given the quantity and quality of stations worked this weekend I can now declare the 4E mono band for 21 MHz a success. Thanks to everyone who worked us and made the weekend possible.

© 2015 Dave, M0TAZ