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Met Office Atlantic Synoptic

Solar~~~~~Flux~~Geo Mag
N3KL: Solar Xrays : Degree of absorbsion QUIET=DX  C-FLARE+=Only Locals+ knock-on effect on Geo-mag    N3KL: GeoMag field :Degree of HF noise QUIET=s2 -UNSETTLED-ACTIVE- STORM=s4+ Severe=s9

Atlantic HF Propagation Map
Hourly Atlantic HF Propagation Prediction Map from Australian Radio & Space Services
Six million people worldwide enjoy Amateur Radio as a hobby. Most Amateur Radio operators (Hams) are involved in Global communication; a great way to develops better understanding of geography, languages and cultures. Licenses are granted by Governments after the operator has passed the appropriate examinations to ensure they have the skills to transmit relatively high power signals on frequency bands across the spectrum, with minimal risk of interference to others. Many Hams enjoy the achievement of using equipment they have designed or built themselves - aerials, transmitters, receivers and test equipment. Amateur Radio is often used to provide emergency communications, eg. the Indian Ocean Tsunami and New Orleans floods of recent years. Click here for information from the Radio Society of Great Britain.

News:   Winter 2009/2010

Click on the image to see other winter photos

Taken at New Year, the countryside looks lovely covered in snow! So cold though that I have had to create a 'Winter Shack'!

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Click on the image to read the write up!

Jabra A210 interface to connect a bluetooth handsfree headset with my FT-747 transceiver.

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I have a neck condition and so rely on a bluetooth headset for most of my phone calls. I came across this article by K7SFN where a bluetooth headset was connected wirelessly to his transceiver so he could move around and rely on the transceiver's VOX control to switch transmit/receive. He used a Jabra A210 device which was developed as an adapter to provide bluetooth flexibility to non-bluetooth mobile phones. Unfortunately it's no longer in production and I had some difficulty acquiring one. I had to buy mine in the US and have my friend Joe forward it on to the UK for me.

K7SFN's article puts it very well and mine was a very straight forward project. The device has a 2.5mm stereo socket for mic in on the tip and phones out on the ring with sleeve to ground. As 2.5mm is a faff to solder, I used a 2.5mm-3.5mm adapter and then a 3.5mm to RCA Phone lead to give me two leads. I put a Yaesu mic connector on one lead and a ¼ inch jack plug on the other lead and amazingly it worked well first time as I tried to contact a station in Cyprus, another in Iceland and a nice audio report from a special event station in Portugal! That's fine using my FT-990 but my micro-shack has a FT-747 with no VOX so the next step was to build a VOX circuit!

Before Christmas, the Micro-shack in my Dining Room was first revamped with a T/R switch to switch PTT on the Mirage B108 linear amp and the Icom IC-2E at the same time. It also steps power down to 9v from 13.8v for the Icom. This was then revamped again to be a complete HF/VHF station - the 'Winter Shack' which comprises the 2m equipment, FT-747DX HF transceiver, homebrew 6m transverter and linear amp, homebrew Z-match ATU and Datong RF-Clipper!

My 20m vertical loop antenna has shown itself useful on 6m too! It is selected by relay control at the bottom of my garden. The relay control is all thanks to Tony G0DLX and pictures can be seen here.

I was hoping to build the Minster SSB transceiver from Walford Electronics but sadly Tim Walford concluded that it's design would make it too expensive to sell so the soldering iron is hot and waiting at the moment! I do need to give the Sutton DSB HF transceiver that I built some years ago some exercise so perhaps will in the near future!

Me and my QTH HF Station Groups & Friends
Logs:160m  M3 Great Circle Map from QTH (http://www.wm7d.net)
QRZ
Nearby.org 191768
Me and Radio Yaesu FT-990    FT-747GX  Repair Archive Prop.   Fcast   RSGB
Me and everything else homebrew HF Sutton Transceiver

Bluetooth radio & VOX
RigPix  eHAM  eQSL  G-QRP
M0EZP Contest Logger Aerial 'Tuning'   Z-match   L-match IARU Beacons  ARRL
QSL Cards  QSL Mgr (G4ZNK) Datong RF Clipper & Archive  NES 10-2 M0NUK Nestle Radio Club
QTH Gallery  QTH on Google Earth CW Gear (Racal & MFJ) G2UG Halifax & District ARS
Station layout - Earth grounding Receivers 9R-59DS and FRG-7 GB3YW West Yorks Repeater
The Antennas VHF/UHF Station G0UPL Hans  M0DAD David  
Inverted-L - 160,80+HF homebrew 6m Transverter and  Linear G4FPH Mark  N1KHB Joe
Inverted-V for HF Kenwood TH-F7E   AKD 2001   AKD 6001 Shopping Links Go to eBay
W&S  ML&S  Nevada  Farnell
Previous antennas:-
Std Dipole   Coaxial Dipole
My 2m Repeater coverage Walford Kits  Index
A shack power-supply for under 10 pounds! Suppliers  Mode Components
Technical & Other links
W4RNL Mostly Antenna topics Real-time IOTA Summit (OH2AQ) Electrical Circuits Primer
GM3VLB Multi-band Inv-V Semiconductor  &   Valve data R Clarke's site - lots of links

David Brewerton M0EZP (c) 2009     This site is hosted by ECOHosting.co.uk who plant a tree when they host your site!
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