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...
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...
... 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...
... 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 ...
... 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...
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...
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...
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...
... 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...
... 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...
... 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 ...
... 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...
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...
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...
... 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...
... 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...
... 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...
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...
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...
... 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...
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...
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...
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...
... go. ... I can ... shielding ... case, ... my ... bit ... I ... hump, ... you a ... output ... Another thing to check is for groundloops through the laptop...
... 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....
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...
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