In an e-mail from Doug Talley 3/2/12 of Pixel Technologies answering my query re a 12V power inserter, he replied, "We also have a different power inserter...
9946
Jack Smith
k8zoa
11:37 am
Pixel's power coupler requires more than 12V because the loop amplifier module has an on-board 13.6V regulator. Given the typical voltage regulator overhead,...
9945
John
jrtow3rd...
11:08 am
I've used a Pixel Tech PRO-1a for several years. It's mounted on a 5 ft mast section attached to my deck, placing the loop's center ~7.5 ft above the ground. I...
9944
dx11
ts6023
10:07 am
You can find a comparison here: http://www.wellbrook.uk.com/reviews/ALA1530-vs-RFPRO-1AReview.pdf As far I know the Pixel Pro-1B is nu much different from the...
9943
Dominique Kremp
krempdo
9:53 am
Hi Bob, I could compare both antennas side by side, trust me, the better one is the ALA1530. Here is a link to a review of both of them. Very comprehensive and...
9942
RobertH
k6uj...
12:13 am
Sometimes my local power line noise is about S8 or so on 80 and 160. I am considering the purchase of one of these magnetic loop antennas for receiving. Anyone...
9941
Zacharias
zliangas
May 21, 2013 9:49 am
OK thank you for the info I have many spare capacitors ranging from 150 to 1500 pf! The design of amandx reminds my big loop on ...
9940
riccardodematteis
riccardodema...
May 21, 2013 8:49 am
you don't have to stick to that spacing value you have to play with capacitance and inductance a big variable capacitor will help http://makearadio.com/loops/...
9939
LIANGAS ZACHARIAS
zliangas
May 21, 2013 8:02 am
Yes i just tested it and was a little garbled with his winding number> althouth as noticed he used 0.5 inch step , the default number shown in the...
9938
riccardodematteis
riccardodema...
May 19, 2013 9:47 pm
I believe it depends on the capacitor you have. How about trying this calculator: http://www.angelfire.com/mb/amandx/loop.html...
9937
LIAGKAS ZAXARIAS
zliangas
May 19, 2013 7:37 pm
Hello I m thinking into making a MW loop using this box http://www.ipernity.com/doc/zliangas/15104891 that has dimensions of 30 x 49.5 x 26cm height (5 cm...
9936
Brian Burns
burnsguitar
May 19, 2013 7:17 pm
Hello Steve, Thanks for the link! There is lots of good stuff on that site, in addition to the info on how tuners work. Cheers, Brian Brian, Some further...
9935
Steve
steveeh131047
May 19, 2013 6:39 pm
Brian, Some further information on what a tuner does, here: http://www.karinya.net/g3txq/tuner_match/ 73, Steve G3TXQ...
9934
Brian Burns
burnsguitar
May 19, 2013 6:13 pm
Hello All, Boy, the more I learn the less I know when it comes to transmitters/antenna tuners/transmission lines/ and antennas. Here is a link to...
9933
john
deju5us
May 17, 2013 4:29 pm
Hi all. For those interested in the use of CAT5 cable, have a look at this site. http://www.lz1aq.signacor.com/ I have one of LZ1AQ'S loops here and it is now...
9932
Andrew Ikin
andrewikin
May 17, 2013 3:52 pm
Rick N6RK wrote on May 17. Are you saying that the amplifier input impedance is a positive reactance that tracks the positive reactance of the loop? Or is it...
9931
kevin asato
kc6pob
May 17, 2013 7:03 am
Should work. By theory a capacitor is nothing more than 2 opposite potential surfaces separated by a dielectric (air, fiberglass, some sort of plastic, etc)....
9930
Richard (Rick) Karlqu...
n6rk
May 17, 2013 6:17 am
... Are you saying that the amplifier input impedance is a positive reactance that tracks the positive reactance of the loop? Or is it possibly a resistive...
9929
William Young
wjlpy@att.net
May 17, 2013 2:17 am
No, I haven't tried a variable dielectric capacitor, but I have tried what I called a "floating rotor" variable capacitor with a metal plate rotating into and...
9928
Andrew Ikin
andrewikin
May 16, 2013 9:17 pm
Phil, All ALA1530 loops built before 2010 would have a similar VHF responce as mentioned in your post. The reason for the inclusion of the VHF filter was due...
9927
Richard (Rick) Karlqu...
n6rk
May 16, 2013 8:45 pm
... See Edmund Laport's "Radio Antenna Engineering" now free on the web at: http://www.lulu.com/product/ebook/ra...shelf/center/2 Rick N6RK...
9926
Adrian Flynn
k7sva
May 16, 2013 7:16 pm
Also add the E.H. Scott "RCH" Receiver to those that used "Twinax" First radio I ever owned. 73 Adrian KF7DYU...
9925
Philip
g0isw
May 16, 2013 6:44 pm
Hello all, I have been a very keen VHF DX chaser for over 20 years, until a house move in 2009 stopped me having beam antennas. When I ordered my Wellbrook...
9924
martin.sivak
May 16, 2013 6:44 pm
Hi, did anybody actually tried this back in 2005 or later? Are there any results? This thread is pretty old and seems to lack any conclusion :) I was planning...
9923
John Popelish
jpopelish
May 16, 2013 5:33 pm
... Have you a reference for this 4 wire transmission line configuration and impedance? I can't find one. All I find is references to star-quad audio cable,...
9922
Rick Karlquist
n6rk
May 16, 2013 5:00 pm
... If you wire the cable as the traditional "4-wire line" then it turns out that the characteristic impedance is 70.7% of the impedance of an individual side...
9921
Rick Karlquist
n6rk
May 16, 2013 4:56 pm
... I measured 2.3 dB per 100 ft. at 10 MHz. This is slightly higher than the number above, if adjusted for SQRT(frequency). The loss is very close to the...
9920
Alex VE3NEA
alshovk
May 16, 2013 12:30 pm
According to the data published here (http://www.cerrowire.com/consumer-rg6u-coax), CAT-5 has lower insertion loss (attenuation) than inexpensive coax. For a...
9919
Steve
steveeh131047
May 16, 2013 10:25 am
When I'm winding 12.5/50 Ohm 1:4 current baluns and need a winding Zo of 25 Ohms, I use a couple of lengths of RG316 wired in parallel (total power handling...
9918
Andy
ingrahama
May 16, 2013 6:15 am
The JK (or JKT?) indoor phone wire I have seen, is four wires with a gentle twist of the whole bunch. Taking a cross section, the four wires are in a square....
