Things happen now, in the past and will in the future. We all go there - turn the speaker volume down to take a phone call and much later wonder if the SDR app...
69692
John Rabson
j_rabson
Nov 2, 2012 12:28 pm
... When I was running the e-mail system for a major organisation, I received an annoyed phone call from the Director one Monday morning, complaining that his...
69693
Paul Schumacher
wnpauls
Nov 2, 2012 12:57 pm
thanks Alan. Paul...
69694
KQ8M
Nov 2, 2012 1:04 pm
Watch prices for the FST's. A lot of eBay sellers want a fortune. I found Mouser sells the FST3235MX's for $0.488 per piece. I bought 25 at $12.20 USD. Mouser...
69695
wfahle
Nov 2, 2012 1:14 pm
I hope you see Tony's comment in this thread. He will send you the part since it was a board fault....
69696
wfahle
Nov 2, 2012 1:23 pm
Well I'm a mere Ph.D. in computer science with 20 years in the industry, so yes, I've done this sort of thing dozens of times! PEBKAC...
69697
KQ8M
Nov 2, 2012 1:24 pm
The part is the board and all of the other parts are already on the board. I doubt Tony will send an entirely new kit unless the board is totally gone. As I...
69698
Anthony Casorso
mux_folder2001
Nov 2, 2012 2:10 pm
PHd? Well, that explains it! ;) TonyBS EE (But master of BS)To: softrock40@yahoogroups.com From: billfahle@... Date: Fri, 2 Nov 2012 13:23:45 +0000 ...
69699
John Greusel
greusel...
Nov 2, 2012 2:13 pm
I just had one recently- I was certain I had blown the BS170s with an inadvertent key down for 10 minutes and replaced them. Turned out it was a short in the...
69700
Malti
pauldebono...
Nov 2, 2012 2:15 pm
RS components are expensive !!...
69701
John
v321uk
Nov 2, 2012 2:19 pm
Is anyone here aware of any difference in performance (noise level etc) between CBT3253 (Texas) versus FST3253 (Fairchild) IC's when used in Softrock receiver...
69702
Sid Boyce
priddix
Nov 2, 2012 2:41 pm
Farnell have a policy of free shipping for a minimum order of £20, less than that and their shipping cost is over the top. If they have to ship from the...
69703
Brad Thompson
electri_cat
Nov 2, 2012 4:12 pm
... Hello-- Can anyone offer pointers to articles that discuss the use of CD405x CMOS-family analog switches as SDR mixers? I'm specifically interested in...
69704
wfahle
Nov 2, 2012 4:36 pm
OP: >> does anyone know of a cheap supplier of the fst3253 chip in the uk since mine did not survive removal from the board? The part is the fst3253 chip,...
69705
wfahle
Nov 2, 2012 4:46 pm
Ok, I've recovered from the brain fart, and am back on track now. This OP-Amp (dual) is in the transmitter, as U6. Do you think noise will cause a problem? I...
69706
Tony Parks
kb9yig
Nov 2, 2012 5:03 pm
Good Afternoon All, This morning after breakfast I started the build of another HF version of the RX Ensemble II receiver. All activities of building the...
69707
Tom Hoflich
km5h
Nov 2, 2012 5:11 pm
I have not seen it mentioned here but they are building the RXTX in Ham Nation. Good building tips Twit.tv/hn 73, Tom Sent from my iPhone 5...
69708
MICHAEL TALLENT
w6mxv
Nov 2, 2012 5:44 pm
Noise probably will not matter for the transmitting side, the output level may not be as good as amps designed for low voltage operation, but try it and see. ...
69709
kc0jm
Nov 2, 2012 7:51 pm
I lifted pin 8 on U7 and found that all of the voltages went back to specification. I ordered a new Opamp from Mouser and replaced the part. I then got the...
69710
Chris Wilson
chrismwilsonuk
Nov 2, 2012 8:07 pm
... 02/11/2012 20:06 Yes, you are right, rather than fiddle with a working setup I will get another kit and build for the other bands. Thanks! -- Best Regards,...
69711
J.Gordon Beattie, Jr....
w2ttt
Nov 2, 2012 8:23 pm
Hi Folks! I have for sale a SoftRock40 for 30m. Best offer Thanks & 73, Gordon Beattie, W2TTT 201.314.6964...
69712
Jasmine Strong
h_e_r_o_i_c
Nov 2, 2012 8:33 pm
I tend to use Digikey; they charge for shipping, but if your order is small and will fit in an envelope, the price is generally not too ridiculous. -J. ... I...
69713
David Sundquist
dsundquist100
Nov 2, 2012 9:44 pm
Hello Brad, Take a look at this site: http://yu1lm.qrpradio.com/sdr%20rx%20yu1lm.htm The SDR HF I/Q S/H (Sample and Hold) Receiver – DR3X has the 405x used...
69714
Sid Boyce
priddix
Nov 2, 2012 11:02 pm
Ordering parts from Mouser or Digikey here in the UK, their shipping charges are a ripoff. They ship even the smallest item by DHL or FEDEX. 73 ... Sid. ... --...
69715
Sid Boyce
priddix
Nov 2, 2012 11:09 pm
I just saw an example on the hpsdr reflector. ... Hi I priced this from the local digikey site .. it's only about $3.00 nz but there is a $40 frieght and...
69716
Brad Thompson
electri_cat
Nov 3, 2012 1:15 am
... Hello, David-- Thank you-- that's a useful collection of reference designs! 73-- Brad AA1IP...
69717
jess_flyin_high
Nov 3, 2012 3:38 am
The whisker you can see in the pic is a result of me leaning over the board to take the picture a couple of hours after having my hair cut Jess...
69718
Malti
pauldebono...
Nov 3, 2012 4:09 am
These are the places to buy of low cost and low shipping, from amateurs to amateurs !! : http://www.thepartsplace.k5nwa.com http://www.dspradio.org/catalog/21 ...
69719
cbayona.cb
k5nwa
Nov 3, 2012 5:39 am
The second site (dspradio.org) has been dead for a while, it will not allow orders. ... Cecil - k5nwa < http://thepartsplace.k5nwa.com/ > <...
69720
Alan
alanzfq
Nov 3, 2012 6:11 am
... Subject: [softrock40] Re: RXTX Ensemble TX OpAmps Question ... So the 5V line is still 4V4? The voltage across R52 is consistent with 90mA drawn from the...
