Stick with the current amp. There are other simple amps out there but I doubt that any simple amp would have significantly better performance. Your amp comes...
8181
M HOLDEN
mholden909...
Jan 22, 2011 3:44 pm
We had one in a polished wooden cabinet, also 9" CRT. The set was almost a perfect cube, but then PYE are squared. Mike G4HOL From: brian nsl...
8180
skyspeed77
Jan 22, 2011 6:24 am
Thank you for the steer on the loop and amp Ray. I will heed your advice. I read about the closet door idea somewhere recently and that is where the double...
8179
longjohn119
Jan 22, 2011 3:48 am
Must have been sometime in 1966 because I was in 2nd grade. Color had been around for a while but still too expensive for the average Joe living in a Middle...
8178
Ray Phillips
sunumabidge
Jan 22, 2011 12:58 am
Your 1metre dia copper loop antenna will be most efficient from about 13MHz to about 23MHz and will need a tuning capacitor that ranges from (about) 26pF to...
8177
skyspeed77
Jan 21, 2011 11:25 pm
I'm almost ready to build my three loop antennas. A few more questions first. I ordered the amp kit from W8DIZ. It does not seem as sophisticated or likely as...
8176
brian nsl
brian.nsl...
Jan 21, 2011 9:07 am
JR, You did not mention the date of your popular event but we had a similar one with 30 people in the house to watch the 1953 Coronation proceedings on our new...
8175
longjohn119
Jan 21, 2011 8:28 am
... When I was a kid my Dad was the shop foreman at a small town weekly newspaper in Aledo, IL and a hand crank start small plane took off by itself from the...
8174
Jay Heyl
jheyl
Jan 21, 2011 12:35 am
On Thu, Jan 20, 2011 at 12:30, Richard Burrows < ... You might want to check out the Q-Stick Plus+<http://www.dxtools.com/QStick.htm>from Radio Plus+. It will...
8173
Richard Burrows
richard.burr...
Jan 20, 2011 9:47 pm
Many thanks Mike will give it a try.Richard...
8172
M HOLDEN
mholden909...
Jan 20, 2011 9:35 pm
Use a long wire antenna, connected to ground, but wrap about 10 to 12 turns of it around the receiver, close to the earthy end, so that the turns wrap around...
8171
Chris Trask
chris3trask
Jan 20, 2011 9:14 pm
... And that was probably a good chunk of your average middle-class income back then. Chris...
8170
Wild, Larry
liteguy_57401
Jan 20, 2011 9:09 pm
According to the US government (CPI) $ 500 in 1950 is = to $ 4,524 in 2010 Larry Wild Aberdeen, SD ... From: loopantennas@yahoogroups.com...
8169
Richard Burrows
richard.burr...
Jan 20, 2011 8:56 pm
I am using an Eton G3 rx to monitor the Navtex transmissions on 519 Khz, can anyone recommend an antenna bearing in mind the G3 antenna input closes below 2...
8168
Chris Trask
chris3trask
Jan 20, 2011 7:56 pm
... http://library.duke.edu/digitalcollections/adaccess/ ... for your aerial ' ... Wow! A 16" Admiral TV sold for $499.99 ($200 off retail) in 1950. Imagine...
8167
brian nsl
brian.nsl...
Jan 20, 2011 7:29 pm
Hi, See the adverts of yesteryear at http://library.duke.edu/digitalcollections/adaccess/ Some of the radio ones are gems like the ' Wonder Wand Antenna ,...
8166
Notareal Too
notareallyreal
Jan 20, 2011 10:10 am
Hi ! One simple(and cheap) pre-amp is here: http://www.kitsandparts.com/rfamp1.1.php BR ... [Non-text portions of this message have been removed]...
8165
longjohn119
Jan 20, 2011 5:42 am
I had problems with stability with that design but I was driving it with a 3/4" OD copper loop. Op Amps simply don't work very well with ultra low impedance...
8164
longjohn119
Jan 20, 2011 5:21 am
Chris has a newer design too he posted in the file section of the Group that looks promising but I haven't tried it myself yet (Waiting until I need other...
8163
longjohn119
Jan 20, 2011 4:58 am
Chris Trask has a couple of tuned and untuned loop designs. Don't discount the active short verticals either, unless you have a specific noise source you need...
8162
Steve Ellington
n4lq
Jan 20, 2011 3:07 am
Ray: Your use of the idiom arty-farty drove me to Google. Now that I know the meaning, I'm am seriously considering some form of ornamental loop for the front...
8161
Ray Phillips
sunumabidge
Jan 20, 2011 12:50 am
Corky, To tune across the whole extended AM band you need a tuning capacitor with a minimum to maximum ratio of nearly 1:11. This means that your 381pF...
8160
Schick, David
w9ofa
Jan 19, 2011 11:11 pm
The key performance parameter of all of these wideband loops, in my opinion, is the nonlinearity performance. Does anyone have a simple way to test the...
8159
skyspeed77
Jan 19, 2011 8:23 pm
... Thank you Andy and the others who responded to my request regarding the Wellbrook Loop. I've learned some key elements from those links. Truthfully I'm...
8158
Dale Parfitt
w4op
Jan 18, 2011 5:45 pm
K6STI (author of AO, a very nice MiniNEC engine based modeling tool) had an article in QST or QEX some years back illustrating how even HF Yagis can be tuned...
8157
Andy
ingrahama
Jan 18, 2011 5:27 pm
... You are right that its pattern won't be exactly the same as a free-space quagi tipped on its side. But yagi antennas (as a general class of antennas with a...
8156
dx11
ts6023
Jan 18, 2011 3:29 pm
And another one: http://www.pm.keirle.com/3_radio/hf_loop_ant/hf_loop_ant.htm Cor Beijersbergen...
