There appears to be something else on, slightly higher up the screenshot, from about 0630 to 0730. 73 John G3PAI ** REPLY SEPARATOR ** Best signal of VO1NA between 0700-0730z here last night. Only tr
[ ... ] Most cannot use a keyboard and just fumble along, CW would be the easiest option [ ... ] It took me a year to learn CW to the test speed (12 words per minute). It took me less than a week to
When visiting family in California last week I noticed that on their cable TV system Channel 136 was titled "G4TTV filter". Unfortunately I was unable to find out what it was about. 73 John G3PAI
[ ... ] To be not quite so serious, Long delays on radio signals were explained (but only in a novel ) by Carl Sagan long ago - but I can never locate the name of the book to re-read it. They are ' d
Funny, 30 years ago I used to base my opinion of newly-graduated electronics students on whether they knew which end of a soldering iron to pick up. G3PAI ** REPLY SEPARATOR ** A research organisatio
[ ... ] maybe it's fancy to blame the EU for anything that goes wrong but ... these things happen all over the world. Too often it is a local or national government official who decides that a Direct
[ ... ] By the way I also have in my possession a photograph of a village roadside sign for a place just off the A1 in the North East of the UK called "SWARLAND" ! I also remember during the early da
Geri, The quarterly newsletter of Leiston Amateur Radio Club has had a series of articles on members' shacks. My shack featured in one issue - please would you get in touch with our newsletter editor
Depending on the particular topic, it might also be worth while posting it to [email protected], which deals principally with 137kHz, including transatlantic and transpacific communication
It has been known for people to use an 807 as a first RF stage, and I believe that at World War II monitoring stations it was used as in broadband amplifiers to feed a substantial number of HROs and
I first heard about this from G3VA. I believe he wrote about this in his monthly RADCOM column Technical Topics years ago. It may also be in one of the histories of the Bletchley Park, Hanslope Park
Over the years I have encountered a number of locator systems: Latitude and longitude GB national grid references QRA locator QTH locator Georef Maidenhead I am planning some HF propagation experimen
Thanks for the suggestion. Most of the people I shall be dealing with will be radio amateurs, but I raised the question because I have noticed, particularly on 5MHz, that people exchange locator refe
Many thanks everybody for your suggestions. Latitude and longitude would certainly be the most widely used way of indicating my location, but in practice the information I have been given about the s
Ian Drummond described something like this in an early issue of CREGJ. I will see what I can find. John G3PAI ** REPLY SEPARATOR ** Can anyone recall this equation, I know it was mentioned on this re
Recent correspondence on the lowfer reflector indicates that Hartmut Wolff, Bill Ashlock and Larry Putman are looking at how to receive such signals in Europe. I seem to recall that Europe No 1 on 18
In the 1970s, copper was so expensive that aluminium was used in telephone cables. Providing a reliable joint between the copper pair and an aluminium one was interesting. John G3PAI ** REPLY SEPARAT
If anybody has any estimates (or measurements) of the increase in signal strength to be expected in the following areas they would be of considerable interest to the cave radio fraternity: South Wale
For filter design I use AADE Filter Design version 4.03 For circuit simulation I am looking at Linear Technology LTC Spice/SwitcherCAD III but don't claim to be competent yet. 73 John G3PAI ** REPLY
