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I just received my kit yesterday. I found that the L1 lead, not the body which goes to gnd, was shorted to the gnd plane on the bottom side of the board. I used an xacto knife to cut the bridge. This

I read Bill, KD5TFD'S comments in the AMQRP Future directions. I wanted to do something similar. Be careful of the reference designators! They are from a previous version of the PCB/schematic and some

Hi all, Just new to the group. Does anybody experience interference from the PC on 40 meters? What about noise and garbage on the 5 V USB line? 73 Rein W6/PA0ZN http://www.nitehawk.com/linrad_dat/

Got my unit operational this afternoon! I am using the internal Xtal at this time. Hope to hook the DDS up soon. Now to learn how to use PowerSDR properly. Marsh, NC7V

Not me. Either with the SoftRock or my other rigs. I elected to put a 78L05 in place of Q1 so I can't comment on that. Marsh, NC7V

Hi Rein, I have built about 25 of the v4.0 SoftRock40 receivers and find the PC noise does not cause much of a problem. When the receiver is calibrated to S9, (-73 dBM, 50 uV RMS), the baseline is

Hi Tony, Thanks for your reply. From looking to the picture on one off the softrock pages I got the idea that the board was directly plugged into an USB connector of the computer. Looking more careful

The supply from the USB connector is 5V. Are you using a separate power supply? Leon

Hi Rein, Actually I just plug my SoftRock into the USB socket on the front of my Dell 2400 machine. The little receiver plays quite nicely that way and others have had the same results with various

I'm brand spankin' new to the group so didn't see the original thread. Expecting a sensitive receiver to operate just inches away from a wideband noise source is optimistic (IMHO). For best results,

I have my softrock 40 running. It's plugged into an external USB hub for power, and hooked up to my B & W broadband folded dipole. I can find no birdies within it's limited tuning range - 7.030 to

OK, this person has experience, my views are different and contrary to this persons real life observations. Apparently there is no interference when operating the softrock-40 without shielding.

Art and all, You missed the point I was making - there are no birdies noted within the limited tuning range provided. This thing, as built will ONLY tune from 7.030 to 7.080. It was not designed as a

I bought a 16 foot USB extension in case I needed it, and I have matching long audio cables. The monitor is the culprit most of the time, but just in case I have a Industrial PC that they were

Tony, one thing I noticed, when just playing around with the SDR software, was the 600 Hz tone that comes from the soundcard (?) at the 7.056 freq. after the Fixed HW oscilator is set up per the

Keep us posted, Art, and let us know how it works out. Stan Rife W5EWA Houston, TX K2 S/N 4216

Hello All, I am afraid that I started the discussion on computer noise in receivers. This was more a general question and not about this particular setup. The question was not about noise within the

I don't know too much about all this, but I personally have experienced noise generated from some of the clones I have built in the past. Some of the cheaper Motherboards seem to have this problem. I

Hi Stan, Yes, the tone at 7.056 MHz (or what ever frequency you set in as the fixed oscillator frequency) is always there. One of the software guys who has worked on SDR-1000 software thinks something

I believe the gunk you see near the center frequency with or w/o hardware attached is an artifact of the signal processing architecture, and noise near DC on the audio input (ie 60 hz hum,. etc) How