Hi Dick, I've searched the Internet but can't find your reference to: Do you know where I can get a copy from? { A final reference that may be found in Amateur...
Hello, I wonder if somebody would like to give some hints what to do: * I got the SoftRock RxTxV6.2 80/40 kit (nice kit, mni thanks guys for the effort) * no...
Matt, I need a shipping address in order to send your transformers. -Reid- W0CNN _____ From: softrock40@yahoogroups.com [mailto:softrock40@yahoogroups.com] On ...
I'm testing my 20M/30M daughterboard and I can't get it to oscillate with the 40.5MHz crystal. With the 18.73MHz crystal it oscillates fine at 56.2MHz and...
Hi Dave, Rs=40 ohms is fairly high for the 40.5 MHz crystal but it should still work. Since it works at 56 MHz, you might first check the number of turns on...
The file ref was to Experimental Methods in RF Design CD but also on Communications Quarterly CD. I also forgot to include another very important recently...
Sounds like a happy SDR camper to me. 73 Kees K5BCQ -- "kb2xj" <kb2xj@...> wrote: Assembly completed early this morning. No issues, works as advertised. ...
Good Afternoon All, It might be possible to have positions for four 20m/30m crystals with the 20m/30m RXTXv6.2 kit by use of a second daughter board. The ...
Good Afternoon All, A total of 140 of the 20m/30m RXTXv6.2 kits have now been mailed with fewer than ten kits still to be mailed to fill all existing orders. ...
OK It's my turn..... I can get the Daughter board to Osc, I only have one crystall instaled at this time, do (I need to have both crystals installed) for it to...
Hi Russell, ... Can or can't? Only need one crystal but you might install the 40.5 MHz to see if that works. Your voltages look OK vs schematic. 73, Paul, N2PK...
Sorry Paul (can not), and I will install the other crystal and see if it works. Tns Paul Russll ... ================= IN GOD WE TRUST ! ================= ...
I've build the 20m daughter board and am measuring its frequency and output voltage with frequency counter and oscilloscope. MA506 type X-tal is the option for...
Hi Jim, OK on the DX. BTW, why you used 74ACT74's instead of the specified 74AC74? The ACT74 may clock higher but it's not an issue at 56 MHz. What I'm...
... in ... have ... I have tried the ICS devices with results similar of that one of the Cardinal Oscillators , published from Clifton Labs ,digging deepest ...
I have used several time a non critical Butler 2 transistor circuit with a fundamental Xtal of 16Mhz directly oscillating at 144 Mhz . This could be a solution...
Thanks a lot Dick ! What a nice and huge docs to digest ....! Some documents are in frames and I was not able to download them totally . Any suggestions ? ...
Squishing the turns as close as I could get them got 40.50MHz to oscillate. My battery has discharged to about 11.5V, dropping the p-p output voltage a bit....
All my voltages and resistances check out fine. Nothing happened when I connected it to the sound card. Intuitively, I decided to start at the oscillator...
... I wound 13 turns (unsquished) on another T25-6 core I had in stock and measured it at 0.54uH. With the supply now at 11.4V, 40.50 now has output of 2.3V...
Hi Keith, What DC voltage are you seeing at the base and emitter of Q13? Also, I think you must mean that the collector of Q14 is at a DC voltage of 2.2 volts...
Hi Tony, You are correct. It was the collector of Q14 that I should have stated. The voltage on Q13 measures C 4.87v B 2.355 v E 1.770 v 73, Keith, W9KGY...
Has anyone tried using a Varactor Diode in the crystal oscillator area of a SoftRock to provide some frequency mobility ? ...maybe xxKhz ? 73 Kees K5BCQ...
I'm planning to add a miniboots type amp to my softrocks, but I'm in a bit of a puzzle with the 30/40 rig. I could make pluggable filters for the amp for each...
Hi Hidehiko, have you a new homepage? 73 Gerd DM2CDB ... From: qrper723 To: softrock40@yahoogroups.com Sent: Sunday, September 02, 2007 3:56 AM Subject:...
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