Problem with RTL-SDR Direct Sampling Driver

[Titan91]

I decided to try Jengal's direct sampling DLL for SDR# for use with the RTL-SDR dongle. This allows tuning from 0 to about 14.4MHz. When I replace rtlsdr.dll in the SDR# directory I am now getting an error saying no compatible devices found. I went back to the original dll and the dongle is working again. Has anyone else tried this driver? My dongle has the R820T2 tuner chip.

Direct Sampling Mode with No Hardware Modifcations - rtl-sdr.com

 

[bama9999]

I'm using the updated driver that's linked to from that page, and I've not had any problems with it. I have a Nooelec dongle that has the R820T chip, and not the newer 820T2 chip.

I can receive down to around 5mhz using this driver.

 

[Titan91]

The alternate driver works for me, but I'm wanting to tune below 14MHz if possible with Jengal's version (basically VLF/LF/HF). The alternate driver adds a slight amount of bandwidth to each end of the tuner's receivable spectrum. I'm thinking the driver does not support the R820T2.

 

[moonbounce]

I have tried it with my R820t2 and was not successful at getting anything. With the hardware mod I was able to pickup a few local commercial AM stations around 980 to 1400 khz, but nothing else. Mind you all I was using for an antenna was about 25 ft of speaker wire with the plastic coating still attached.

 

[Titan91]

What version of SDR# are you using, and what version of Windows? I am running 1.0.0.1333 under Windows 7 Professional x64. I'm thinking there is something simple I am overlooking here. As for the reception, even though it appears to pass the antenna connection straight through the R820T2, I realize it's hit and miss.

 

[ka3jjz]

Keep in mind that HF is not like scanning where what you can hear is concerned. During the daytime, stay above 10 Mhz or so - after sunset, stay below 10 or 11 Mhz (depending on solar conditions). You should be able to hear your local MW stations anytime, but the weaker stuff only comes out after sunset.

During the evening (assuming you're on the East Coast), the 6, 7 and 9.5 to 10 Mhz areas is where you should find a ton of activity...Mike

 

[moonbounce]

What sampling mode would one use Q or I direct?