I built the SoftRock RXTX 80/40 over the holidays and have been playing with it using an old laptop for the processing. I started looking for a better audio...
17189
Leon
leon_heller
Jan 1, 2008 12:58 pm
... From: "Bob Zinn" <bz+yahoo@...> To: <softrock40@yahoogroups.com> Sent: Tuesday, January 01, 2008 12:10 PM Subject: [softrock40] how about a...
17190
Don Parks
k4ijv2006
Jan 1, 2008 1:11 pm
what is the cost for the units? which version are you getting? Don K4IJV (Interplanetary Junk Vendor) Huntsville, Al...
17191
g0opb
Jan 1, 2008 1:35 pm
Hi all, I have trawlled through all the files and posts (before getting too bored) and can find no referance to LO clock jitter. I note some ccts use D type...
17192
k5nwa
Jan 1, 2008 3:23 pm
... It's doable with a couple of extra components, but be aware that it's a 16 bit ADC that you have there, it will work but you will lose dynamic range. The...
17193
k5nwa
Jan 1, 2008 3:31 pm
... All sorts of information at the link below; < http://www.softrockradio.org/si570 > This present buy is by Tom Hoflich, right now he is buying in small ...
17194
Kees & Sandy
keestheham
Jan 1, 2008 3:39 pm
Cecil, Happy New Year ..... Do you have an idea what the prices are for the 4 or 6 fixed frequency devices Si offers ? 73 Kees K5BCQ ...
17195
k5nwa
Jan 1, 2008 3:49 pm
... The 74HC74 is rated to work from 60MHz to 75MHz depending on the vendor so 32MHz is not stressing the logic at all. As far as clock skew due to propagation...
17196
James French
w8iss
Jan 1, 2008 3:57 pm
I have searched the messages and didn't find anything saying I can or can not do this with the 40m/80m RXTXv6.2. Knowing me, I just haven't input the right...
17197
Ben Hall
kd5byb
Jan 1, 2008 4:09 pm
Good morning Bob and all, First, Happy New Year! Second, perhaps I'm missing something - I've always thought that one of the wonderful things about the...
17198
Tony Parks
kb9yig
Jan 1, 2008 4:30 pm
Hi James, Yes, a crystal change is all that is needed to use the RXTXv6.2 in the SSB portions of the bands. For example: I have a supply of 28.636 MHz...
17199
Bob Zinn
N5bz
Jan 1, 2008 5:03 pm
... The audio still must be digitized before processed. The Audio to digital and digital to audio is done by the computer's sound card. But many hams find that...
17200
k5nwa
Jan 1, 2008 5:08 pm
... Not with any certainty, Tom should be addressing this since he dealt with the salespeople. I recall something about the fact that they were a little less...
17201
k5nwa
Jan 1, 2008 5:15 pm
... Yep, all he is trying to do is make his own USB sound card, an area that is lacking in choices. Cecil K5NWA www.softrockradio.org www.qrpradio.com ...
17202
T Hoflich
km5h
Jan 1, 2008 5:44 pm
... Tony had mentioned that he might be interested in this type of part also. Let me know what part you are thinking about and I will check with the rep and...
17203
Dave Anderson, K4SV
davek4sv
Jan 1, 2008 5:55 pm
Hi All, I have built my RXTXv6.2 kit and it seems to work well with Rocky. In playing with it (160m) I can hear signals and it sounds great. I am using the...
17204
Tony Parks
kb9yig
Jan 1, 2008 6:05 pm
Hi Dave, The SoftRock RX function should have good image rejection after the Rocky image null feature works on signals available on the band. No image...
17205
k5nwa
Jan 1, 2008 6:09 pm
... No, you have one of the signals not getting to the PC, check your cabling, the two signals are used to cancel images if one of them is missing you have no...
17206
Bob Zinn
N5bz
Jan 1, 2008 6:41 pm
... That board was the 'inspiration' but not necessarily the way to go. You are right, so, a 24 bit ADC would be a better way to go. ... That is what I was...
17207
k5nwa
Jan 1, 2008 7:18 pm
... During late winter (I need to recover from expenses and build up my slush fund), around March I will be doing a group buy of several components. One of the...
17208
Kees & Sandy
keestheham
Jan 1, 2008 7:41 pm
Tom, It was the Si534 part (4 preselected frequencies) in CMOS or LVPECL. The LVPEC part has complimentary clock outputs which could eliminates one FF and...
17209
T Hoflich
km5h
Jan 1, 2008 8:21 pm
It also can be LVDS. What 4 frequencies would be good? To get a better price, we would have to agree on the same frequencies for 25 pieces (or 100). I will...
17210
Bob Zinn
N5bz
Jan 1, 2008 8:25 pm
... yet. ... Good!!!! ... I tried a different laptop which seems to have a much better 'sound card'. Almost no 'hump' in the middle, and YES, you are [of...
17211
Kees & Sandy
keestheham
Jan 1, 2008 8:38 pm
Tom, Happy New year and I appreciate it. Apparently there is no available "price list" and everything goes via quotes (and you have good rapport with this...
17212
k5nwa
Jan 1, 2008 8:43 pm
Incase you are one of the ones that has protested about having to fill out a form in order to get to be able to post on softrockradio.org below is an example...
17213
brainerd@...
brainerdd
Jan 1, 2008 8:46 pm
... I believe the Si534 is NOT programmable. You can only select one of the 4 preset freqs. Dave - WB6DHW <http://wb6dhw.com>...
17214
donnyr7
Jan 1, 2008 8:53 pm
I Just finished building the SoftRock Lite upgraded 20m. I was suprised that it worked without a hitch, because I haven't built anything since my Heathkit...
17215
Terry
wb4jfi
Jan 1, 2008 8:55 pm
... go. ... I can ... shielding ... case, ... my ... bit ... I ... hump, ... you a ... output ... Another thing to check is for groundloops through the laptop...
17216
brainerd@...
brainerdd
Jan 1, 2008 9:20 pm
... You can get 74AC parts that are pin for pin compatible and even available in DIP packages. You can also get 74LVC parts in SOIC that are even faster....
17217
gw0nkg
Jan 1, 2008 9:33 pm
Hi all, I have just obtained an SDR board which is already built up. Its my first experiance of this type of radio, but I think I may have a problem and wonder...
