@ Chris, Slightly OT, but I thought I might also try your loop amplifier in a wideband design! I'm struggling to find the MPS6521; would the BC550C be a...
9680
loopantennas@yahoogro...
Feb 2, 2013 3:57 am
If you have a link relevant to the group, please post it in the Links section. If you just put it in a message, it will get lost in the shuffle after a few...
9681
loopantennas@yahoogro...
Feb 2, 2013 3:57 am
Active AM Antenna With Twin Coil Ferrite by C. Crane Co. http://www.ccrane.com/antennas/am-antennas/ JLKolb’s antenna links including the KRS AA-1 Active...
9682
Vojtech
bubnikv
Feb 3, 2013 10:20 am
Hello. I studied the theory and experiments collected by Chavdar LZ1AQ carefuly. Chavdar concluded, that for a loop with diameter smaller tham 1m, the loading...
9683
Richard (Rick) Karlqu...
n6rk
Feb 3, 2013 6:29 pm
... My experience with the NCJ loop is that no preamp is needed beyond the built in preamp in the radio. The loop as described in NCJ has more noise output...
9684
pop
pop_vasile
Feb 6, 2013 5:08 am
2.5-15KV BUTTERFLY CAPACITOR KITS for sale http://www.flickr.com/photos/93005502@N08/page3/ www.youtube.com/watch?v=dmZxgmalP9g 3" OD ROTOR 4" OD ROTOR 5" OD...
9685
pop
pop_vasile
Feb 6, 2013 5:08 am
2.5-15KV BUTTERFLY CAPACITOR KITS for sale www.youtube.com/watch?v=dmZxgmalP9g 3" OD ROTOR 4" OD ROTOR 5" OD ROTOR 6" OD ROTOR 8" OD ROTOR VA6POP ...
Forgive the belated response, but: ... Yes, very much so. The equivalent-diameter cylindrical-cross-section conductor corresponding to a flat,...
9688
Vojtech
bubnikv
Feb 8, 2013 8:28 am
Hello Rick. ... I am doing an exercise in simplicity. Currently the only HAM HF transceiver in house is a tiny kit fitted in the Altoids tin - the ATS-3b by...
9689
legitfromtheman
Feb 8, 2013 3:03 pm
Hello all, I'm trying to buy all the parts needed to construct a carpet loop antenna as detailed: ...
9690
alienrelics
Feb 8, 2013 3:07 pm
Yahoogroups does those weird long links to prevent outsite sites from leeching bandwidth. So within 30 minutes of getting that link, it does not work. The...
9691
Don
dtmknsn
Feb 8, 2013 4:48 pm
There are lots of them on eBay. Most old tube radios will have the type of capacitor you want. Look at the photo's on eBay to get an idea of what they look...
9692
Stacy Williams
stacywilliam...
Feb 8, 2013 10:03 pm
Hello:) What would work was to connect a say 75pf capacitor in parallel to the 200pf you have mentioned. Then you could even have a switch to use the extra 75...
9693
Sam Morgan
linuxusr47
Feb 9, 2013 1:16 am
http://midnightscience.com/catalog5.html ... -- GB & 73 K5OAI Sam Morgan...
9694
Ian Johnson
ianjohnno
Feb 9, 2013 5:57 am
Have a look at http://www.midnightscience.com under Radio Parts for the 365pF variable capacitor. 73 Ian Johnson Brisbane Australia...
9695
John
john16452001
Feb 10, 2013 1:54 am
Give this URL a try http://www.flickr.com/photos/93005502@N08/ John. ... -- Windows 7 Home Premium. Regards John. York North Yorkshire Locator IO93lw Save...
9696
legitfromtheman
Feb 10, 2013 4:48 pm
Many thanks for all your helpful responses. I will experiment with adding a few capacitors in parallel and see how that works. Jim...
9697
Vojtech
bubnikv
Feb 10, 2013 5:09 pm
Hello. I measured the maximum and minimum band noise of my 1ft dmr loop standing on a window sill. I am living near a HV power line and the attenuation of the...
9698
Andrew Ikin
andrewikin
Feb 10, 2013 6:18 pm
Vojtech wrote Feb 10. I measured the maximum and minimum band noise of my 1ft dmr loop standing on a window sill. I am living near a HV power line and the...
9699
fernando talamantes
xe2ej
Feb 11, 2013 4:44 am
Hi Vojtech: you must try at more distance from power lines. if u are living very close, you cant get a good null because the antenna is receiving noise...
9700
vbifyz
Feb 11, 2013 10:59 pm
You can also try and tilt the loop around the horizontal axis. This may give you few more dB. This is my actual observation. Note that the orientation that...
9701
WilliamY
wjlpy@att.net
Feb 15, 2013 11:21 pm
Does anyone know where I can buy 30 feet of 660/46 Litz wire(solderable)? It's available on ebay, but I would have to buy 60 feet or go outside of ebay to...
9702
jpopelish
Feb 15, 2013 11:39 pm
... There is an ebay auction for 60 feet of 330/46 litz. You could parallel a pair of these to make your antenna, for $20. -- Regards, John Popelish...
9703
William Young
wjlpy@att.net
Feb 16, 2013 5:18 am
Thanks. I did something like that years ago with some medical hardware and it worked. And, also I have an idea how I can solder Litz wire: I have a 100 Watt...
9704
myamiphil
Feb 16, 2013 4:29 pm
Did you use medical ecg patient cables? I wanted to use some for a very short length needed for an rf antenna connection. I stripped it back and found the...
9705
William Young
wjlpy@att.net
Feb 16, 2013 6:48 pm
Phil, Some patient cables(at least this was true 30+ years ago) have graphite powder between the shield and the insulation around the center conductor. Some...
9706
everettsharp74
Feb 16, 2013 7:01 pm
Guys, If you are wanting to buy Litz wire, I have used this guy for the last 3 years, Ming, he does sell on eBay, but I have purchased wire directly from him...
9707
Hue Miller
xtemporize
Feb 17, 2013 11:03 am
Loop Antenna News and Information ForumIs it really necessary to use Litz at those frequencies? Also, why the procedure which uses a rag to wipe the soldered...
9708
Everettsharp
everettsharp74
Feb 17, 2013 11:35 am
When you heat the Litz wire you are melting/burning the varnish insulation on each wire strand, which leaves a lot of ash/cobs of black crap. I have soldered...
