Actually, the notes had a reference to the Norcal QRP dummy load which had a built-in RF detector circuit. However, the point is valid in that the notes were...
71341
Orin
orinem
Jan 3, 2013 5:35 pm
Using 220pF/800nH/470pF and 47 ohm load: -3dB at 15.2 MHz -6dB at 16.5 MHz -10dB at 17.9 MHz and FWIW, -1.5dB at 14.3 MHz. Orin....
71342
Orin
orinem
Jan 3, 2013 5:57 pm
... Only 3dB attenuation at 20MHz though according to Elsie so probably not good for 30m. If you are prepared to parallel capacitors, I got -0.25dB at 14.3MHz...
71343
barry underwood
under2b
Jan 3, 2013 6:10 pm
Paul, I just found time to have closer look at my Ensemble. The original power measurements I made were with a Watson power / SWR meter at the low end of it's...
71344
Ed
ed.murphy31
Jan 3, 2013 6:18 pm
Hi All, I thought that you might like to have a preview of the preformance of the filter thats used as part of the Murphy QRO Mods. I have included the results...
71345
David Turnbull
ae9rb
Jan 3, 2013 7:13 pm
I did some tests on a 40-30-20 build. Instead of an oscilloscope, which adds probe capacitance (especially on 10X), I measured with a VSWR bridge that uses...
71346
n7or
Jan 3, 2013 7:57 pm
... Is it the consensus that this rule applies to all toroidal inductors? Like the 12 that I just built (apparently poorly) for my ensemble rx II? In the 4 BPF...
71347
warrenallgyer
Jan 3, 2013 8:00 pm
David Your concerns are valid and there are enough variables here that I think we need more testing and confirmation before ratifying this change. I have put...
71348
warrenallgyer
Jan 3, 2013 9:00 pm
As a follow-on the the 40/30/20 filter discussion and the toroid winding strategy: On my test filter, 16 turns on yellow T37 cores, 220, 470, 220 pF caps,...
71349
n7or
Jan 3, 2013 9:16 pm
I have two of the lite II combined kits that I built as starter kits before moving up to the more advanced softrocks. One for 40 meters, one for 20. Both...
71350
n2bha
Jan 3, 2013 9:28 pm
Congratulations! Hope to hear you on soon and have a RXTX to RXTX QSO! The enclosure is fantastic! 73, Vaughn N2BHA...
71351
Jim
n8xyn
Jan 3, 2013 9:57 pm
Man, that case is beautiful! Nice work... DE N8XYN Jim From: N2BHA Sent: Thursday, January 03, 2013 4:28 PM To: softrock40@yahoogroups.com Subject:...
71352
Michael Walker
va3mw
Jan 3, 2013 10:07 pm
Very nice. I love it when someone has all the fun tools. I sent you an email from my other account. Mike va3mw...
71353
tomenglish125
Jan 3, 2013 10:10 pm
Not getting a lot of response, I'll try to expand a little. I am running SdrDX on a MacBook Pro. It listens to the Ensemble RX II nicely. I would like to be...
71354
John
greusel...
Jan 3, 2013 10:18 pm
Sorry for the confusion- here's the original message. Has anyone out there set up a Python routine to capture center freq info from SdrDX and send it out to...
71355
Alan
alanzfq
Jan 3, 2013 10:21 pm
... Subject: [softrock40] Re: SdrDX on OS X - Script for Ensemble RX II ... I know nothing about this. But my first response is to use a search engine. "SdrDX...
71356
John
greusel...
Jan 3, 2013 10:27 pm
I get it now Tom. I thought there already was a USB/Macintosh interface to the Softrocks? I'm fairly sure there was/is. It may have been for DSP Radio. There...
71357
Ed
ed.murphy31
Jan 3, 2013 10:27 pm
A very nice case indeed. Why not give serious consideration to world wide Flat Pack sales of your design ? Ed...
71358
John
greusel...
Jan 3, 2013 10:30 pm
Tom, This is the software I mentioned in my previous message- looks like he has a handle on it. http://dl2sdr.homepage.t-online.de/ John KC9OJV...
71359
pauldebono@...
pauldebono...
Jan 4, 2013 12:22 am
Hi all, Thanks to Tony and Rob for their interest and support in solving the issue. Thanks also to all those who have contributed on this thread . The whole...
71360
junius fox
w5hir
Jan 4, 2013 1:48 am
Craig, If they are not sold, I can use them Foxy w5hir ... From: n7or To: softrock40@yahoogroups.com Sent: Thursday, January 03, 2013 3:16 PM Subject:...
71361
Brad Thompson
electri_cat
Jan 4, 2013 1:50 am
... Hello, Stuart-- It would be interesting to try this approach using an SDR (software-defined radio) or equivalent, implementing a waterfall display and...
71362
warrenallgyer
Jan 4, 2013 2:07 am
Paul Just to clarify those newbies that DO have a meter: 1 watt equals approximately 20 volts peak to peak and 7 volts RMS. Most meters read AC in volts RMS...
71363
n7or
Jan 4, 2013 3:11 am
SOLD....
71364
pauldebono@...
pauldebono...
Jan 4, 2013 6:32 am
Warren, I did not mean that the building notes are wrong !! I meant that 10 volts should be defined, as either peak to peak, peak or RMS. Sorry for any...
71365
Alan
alanzfq
Jan 4, 2013 7:50 am
... Subject: [softrock40] Re: Anyone built the Ensemble RXTX for 40-30- & 20 meters ? ... Paul, A meter is the minimum required for a RX. And many newbies have...
71366
pauldebono@...
pauldebono...
Jan 4, 2013 12:40 pm
10 volts peak = 7.07 rms = 1 watt = 30dBm = 60 dBuW into 50 ohms load Taking into account 200mV or so voltage drop. into the probe diode, depending on the...
71367
pauldebono@...
pauldebono...
Jan 4, 2013 12:50 pm
Alan, I have discovered a dip at C25 of the LPF by means of a probe, which led to a revision of filter for 20m.! Probably, the designer calculated the values...
71368
pauldebono@...
pauldebono...
Jan 4, 2013 12:56 pm
An ordinary meter does not measure rms correctly. We need to have a meter that measures TRUE RMS, which is a specialized kind of meter, normally classified...
71369
Jabct1aos
ct1aos
Jan 4, 2013 1:07 pm
What is your problemas??? Do the coils as your should and you  will have 1.2W@20m. 73 Enviado de Samsung Mobile "pauldebono@..." <pawlud@...>...
