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multiple-input sound cards?

(24)
... Leif, Thanks for your tests. 73 Alan G4ZFQ
Alan
24
posts
Mar 29

OS X software and HDSDR

(3)
Thanks, Dave. I thought it might be that program (which I've tried already) but on the off chance it was something new... 73, Robert VE7ZN From: "Dave Sublette
ROBERT DALE
3
posts
Mar 23

VHF Ensemble as microwave IF monitor

(10)
Thanks Alan. The netbook I was trying to use years ago was an Acer with an 8 inch screen. It appears most of the netbooks that are around now are 10.1 inch
Zack Widup
10
posts
Mar 23

Illegal Spurs - Mixer output details

(27)
Leif, I can confirm that the proposed modification with 10pF parallel to R44 does reduce the spur on 7MHz. On my RXTX 40/30/20 the spur reduced from -44dBc to
gerhard972
27
posts
Mar 21

2200, 630, 160 mtr RXTX modification

(18)
The pdf describing the 2200, 630, 160 mtr RXTX mod has been slightly revised (to provide btr info on using HDSDR) and renamed. It can be found in the folder:
ve7vv
18
posts
Mar 19

Softrocks Close-In Spurs revisited

(97)
Hi Warren, ... Yes. Carrier is LO+mod, spur is LO-3*mod. Carrier - spur = 4*mod. ... Please understand this is NOT theory, it is experimental facts. ...
Leif Asbrink
97
posts
Mar 19

Re: The Illegal Spurs - Spectral Purity of Test Tones [1 Attachment]

(5)
No Worries Warren, been know to happen before ;) Anyways, who spells Stew that way beside me..hihi...Used to be a family last name many generations ago. Stew
Stew
5
posts
Mar 15

The Illegal Spurs - Real or Not?

(3)
Sorry, my dyslexia kicked in. It was the 30/20/17 build for this test and it is shown at 30 and 17 meters for the two tests.
allgyer
3
posts
Mar 15

Need Manual PTT for Ensemble

(3)
activate PTT. It looks like it could be a pin on the attiny85 socket that goes to the opto-isolator. Or just make this +5V 73 Alan G4ZFQ
Alan
3
posts
Mar 10

HDSDR Question?

(4)
Bob If you hover your mouse over the LO on the hdsdr window and left click, a window opens up and you can set the LO frequency directly. If you hover over the
jlafe
4
posts
Feb 22

Bypassing filters on RXTX ensamble

(7)
This post finally answered my question. I took the easiest path to multi-banding my SoftRock and tried to rely on bandpass filters after the PA. I will attest
devmrs
7
posts
Feb 20

Newbie to SDR needs some (a lot actually) help

(29)
Paul,Tnx ur response.  It helps answer at least some of the curiosities I asked about. And next time I'm fiddling with something new, I won't be so anxious to
Bob Nelson
29
posts
Feb 18

git source owner

(3)
Hi, all I am making SDR via IP. using RTL-SDR and one board computer. Soft66IP http://www.zao.jp/radio/soft66ip/ I hope you can enjoy remote reception. best 73
kazunori miura
3
posts
Feb 16

A bit of info on sound cards that I didn't know.....noise behavior

(3)
Sound board ADC’s are made for one application. They do it good. They are not designed for SDR. We can get really good SDR’s within the bandwidth of the
Bruce & MaryRose Randall
3
posts
Feb 5

configuring quisk for softrock lite

(12)
It did many years ago, my screenshot was generated August 11th. 2013. ... -rw-r--r-- 1 root root 51522 Aug 11 2013 FLDIGI.png If you look in the top left you
Sid Boyce
12
posts
Feb 2
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