Or try this: "the kit from G4HUP available from http://g4hup.com/LCM/LCMeter.htm which is only LC but excellent for measuring and matching caps including SM...
69876
Alan
alanzfq
Nov 10, 2012 12:05 pm
... Subject: [softrock40] ensemble rxtx RX mixer ... Paul, You have USB power? Other than that you have to go back to the divider/oscillator. 73 Alan G4ZFQ...
69877
Alan
alanzfq
Nov 10, 2012 12:12 pm
... Subject: Re: [softrock40] Measuring toroids inductance ... Yes, this is the same as many designs. Google "a surprisingly accurate digital lc meter" But you...
69878
Alan
alanzfq
Nov 10, 2012 12:16 pm
I meant to add that most LC meters do not measure at the working frequency but previous discussions have concluded it makes no practical difference. 73 Alan...
69879
Malti
pauldebono...
Nov 10, 2012 12:58 pm
With all due respect, there are scores of similar pic based circuits around. What I need is a pic based, but the coil measured under a high RF frequency. That...
69880
John Greusel
greusel...
Nov 10, 2012 1:10 pm
James. Low power output is a common problem when you have a poor connection at a transformer but it doesn't mean you need to start over and rewind everything....
69881
timinuganda
Nov 10, 2012 1:11 pm
This is my first attempt to build/solder smt, resistors, etc. I am a novice builder. Here are the readings for Stage 3 components on board dated 5/24/10. 5v...
69882
pauldebono@...
pauldebono...
Nov 10, 2012 1:15 pm
I found it. It is not a kit, but a usb device: http://www.henrytest.com/ Paul...
69883
Jeff Blaine
keepwalking188
Nov 10, 2012 1:29 pm
Paul, Not sure what the basis for that claim is. The PIC and similar have worked for all the RF stuff I’ve done but you may have a special application. In...
69884
Jack Smith
k8zoa
Nov 10, 2012 2:07 pm
Simple PIC-based instruments measure inductance and capacitance at a rather low frequency compared with ham frequencies - in the 100-700 KHz range. However, an...
69885
PAUL
g1fjh
Nov 10, 2012 2:46 pm
Thanks Alan I do have USB power so will do as you say and check back a stage further. Regards Paul...
69886
Russ Ramirez
rlramirez77
Nov 10, 2012 3:04 pm
I'm sure the vast majority of people who have used the microcontroller-based LC meters will attest that given a rated off the shelf inductor or a wound coil of...
69887
jfail11
Nov 10, 2012 3:08 pm
I just bought a built Ensemble II HF Receiver from Tony. I would appreciate any input on a good Internal or USB sound card for use with my PC and the...
69888
Russ Ramirez
rlramirez77
Nov 10, 2012 3:10 pm
Did you have the ATTiny85 out of its socket when you made the resistance measurements? R4 is 1M Ohm. With the microcontroller removed and just the USB plugged...
69889
yl2gqn
Nov 10, 2012 3:21 pm
Hello, Probably someone here can help me with some ideas to resolve my problem. Time from time without any systematic, the PowerSDR software lost Si570 USB...
69890
timinuganda
Nov 10, 2012 3:38 pm
Russ, thank you for responding. No, the ATTiny85 was in the socket when I took measurements. R4 in my "Builder's Notes" Stage 03 Local Oscillator says "R04...
69891
Russ Ramirez
rlramirez77
Nov 10, 2012 4:02 pm
You're welcome. I assumed this was an RX Ensemble II, is that correct, or no? For the aforementioned, or the Rx Ensemble, use the schematic value of 1Meg....
69892
yl2gqn
Nov 10, 2012 4:23 pm
Hello Paul, I'm use PC based software with very simple circuit. The accuracy is absolutely enough for radio amateurs. Original article is here:...
69893
timinuganda
Nov 10, 2012 4:50 pm
Russ, the Ensemble was purchased December 2010 for $77 so I'm guessing it is not an Ensemble II, but that's a guess. The board says, "RXTX Ensemble -...
69894
jose
ct1aos
Nov 10, 2012 4:55 pm
Yes, thisis a rxtx ensemble and not an rx II. You should follow the build for RXTX? 73 Enviado do tablet Samsungtiminuganda <timinuganda@...>...
69895
rifkum
Nov 10, 2012 5:21 pm
I just bought and used one of these... ...
69896
rifkum
Nov 10, 2012 5:29 pm
I posted this response to a qustion about measuring Toroids... but I thought I would start a new topic so others would be more likely to see it. I have no...
69897
Zack Widup
w9sz
Nov 10, 2012 5:30 pm
I also bought one of these. I am also very impressed. Hand-wound inductances and toroids measure within a few percent of the calculated value. I made a little...
69898
MIKE DURKIN
seth_otherpower
Nov 10, 2012 5:59 pm
You didn't look very hard for USB with stereo line in ... Its been discussed before .. My cheap choice was a CM106 clone .. Mike KC7NOA To:...
69899
Russ Ramirez
rlramirez77
Nov 10, 2012 6:13 pm
OK, so it is an RXTX, and sounds like a 6.2. I'm sorry for the confusion. 6.3 and RX II are basically the same in this area, but the 6.2 is an earlier design...
69900
Russ Ramirez
rlramirez77
Nov 10, 2012 6:15 pm
I have the same unit, it has been excellent and verified by other units for accuracy and anecdotally through use. Russ...
69901
kcmuthumani
Nov 10, 2012 6:20 pm
Hi John, You might want to try the built in soundcard, about 3 months ago I bought a new MB for my sdr computer it has a Realtek ALC887 HD chipset and I found...
69902
jose
ct1aos
Nov 10, 2012 6:29 pm
If itsays RXTX ENSEMBLE THEN IT IS NOT A RXTX 6.2. 73 Enviado do tablet SamsungRuss Ramirez <russ.ramirez@...> escreveu:OK, so it is an RXTX, and sounds...
69903
David Turnbull
ae9rb
Nov 10, 2012 6:34 pm
The AVR isn't real USB. It's not electrically compliant and doesn't recover from all errors. See the library info: http://www.obdev.at/products/vusb/index.html...
69904
Alan
alanzfq
Nov 10, 2012 7:54 pm
... Subject: [softrock40] Protect USB Si570 from parasitic RF in shack. ... Yes, I cannot offer any specific advice. You must experiment until you cure it. ...
