Saturday, 18 July 2009
Pulsed power supply for magnetic loop.
I have been re-building my magnetic loop control box to make it more user friendly.
I am putting it in a larger box with led's to indicate the magloop in use, 80-30 or 20-10 mtrs
also to indicate high or low tuning.
The circuit is a couple of 555 ic's built on veroboard. The motor will go from dead stop to full speed without stalling. The control of the capacitor on both magloops is exellent, you have rapid tune to get to the part of the band you want and then slow tune to get min SWR.
I'll post more pictures when it is completed. The circuit will run from 3 to 15 volts so is ideal for a good range of motors. The one's used in my magloops are both 12 volt ones from Comodrills in Kent. They are also available from Maplins at a higher cost !!!
Friday, 17 July 2009
CW-Code-Warriors · *The Official Code Warrior Site*
This site, The Real, The Official *Code Warrior,and MAG LOOP Site*, is dedicated to the preservation of CW,QRP,Building antennas of all types and helping those who are antenna restricted get on the air.
We do a lot of testing and pass it on to you.
We strongly support the PRESERVATION of CW and teaching others that low power can work world wide even when band conditions are down.
Besides what you read below,
The list will also serve as a meeting place,or aslo known as the watering hole, so we can post who we worked.
So why not check us out and join.
http://groups.yahoo.com/group/CW-Code-Warriors/
===============================================
This small list is for a few hard core CW QRP DX hunters.
If you need help with antennas and you ham gear please,I think Bill and I tried it all so don't hesitate to ask.
Code Warrior certificates are issued by me.
BILL (William) STEVENSON G4KKI, Official holder of copyrighted LOGOs and words related to the Code Warriors
COPY RIGHT 1998,1999,2000,2001,2002,2003,2004,2005,2006,207,2008,2009
All Righte Reserved,Logos.Name and certificates,Badges,!!!>
Thursday, 16 July 2009
SoderSmoke a global adventure in radio electronics
I bought Bill Meara's book last week, "Soldersmoke A Global Adventure in Radio Electronics" I have read the first 3 chapters and it is one of those book you don't want to put down. It is written in a nice easy to read style and so far it has told of how he became a radio ham when he was 13 years old. It is one of those books I just know I am going to read over and over again.
Take a look at the soldersmoke podcast page
Weds 15th
Just been to the radio Club I go to, only 4 or 5 of there.
spent the evening palying around with linux live cd.
Think I'll stick with windows.
I have been working on a PAC-12 antenna for portable working.
I plan to use it from Poldhu in Cornwall when on my holiday there.
I will be operating on 20 meters CW and maybe do a little ssb as well using
the MFJ-9420.
I'll post details on the pac-12 when I get round to it.
Subscribe to:
Posts (Atom)