Search found 23 matches

by qrp
Mon Sep 02, 2019 10:58 am
Forum: Other SDR Devices
Topic: NanoVNA software mod
Replies: 1
Views: 878

NanoVNA software mod

Here is a modified NanoVNA software. It allows to resize window. Also I added two new diagrams: Series RLC and Parallel RLC. It shows Rs, Xs, Rp, Xp and |Z|. Also fixed SWR diagram. If you have 500 Ohm dummy load, please post screenshot of Series RLC for your NanoVNA with 500 ohm dummy load on CH0. ...
by qrp
Sat Aug 31, 2019 4:24 am
Forum: Troubleshooting Help
Topic: New rtl-sdr v3 driver Nightmare Dongle works great
Replies: 2
Views: 284

Re: New rtl-sdr v3 driver Nightmare Dongle works great

if you're using a new motherboard with USB3, try to use this ExtIO: https://www.rtl-sdr.com/forum/viewtopic.php?f=1&t=4710&sid=92151e8f0388de50768de81b81f9a3a8&start=20#p11796 It contains rtlsdr.dll with more fresh version which supports USB3 controllers. It is developed for HDSDR, but you can try t...
by qrp
Sun Aug 18, 2019 5:37 pm
Forum: RTL-SDR Discussion
Topic: SDR# issues
Replies: 11
Views: 1015

Re: SDR# issues

Does HDSDR works ok?
by qrp
Fri Aug 09, 2019 7:10 am
Forum: RTL-SDR Discussion
Topic: ExtIO_RTLSDR_u8.dll with HDSDR 2.76 + dongle
Replies: 11
Views: 2160

Re: ExtIO_RTLSDR_u8.dll with HDSDR 2.76 + dongle

richsch , When you select "Auto Q", there is no need to switch direct sampling manually. It will be automatically switch on/off when your LO frequency goes below 24 MHz. You're don't need to change anything, just change LO and direct sampling will be automatically enabled and disabled. You can forg...
by qrp
Mon Aug 05, 2019 7:12 pm
Forum: RTL-SDR Discussion
Topic: ExtIO_RTLSDR# - custom ExtIO for RTLSDR
Replies: 26
Views: 9796

Re: ExtIO_RTLSDR# - custom ExtIO for RTLSDR

A small update ExtIO_RTLSDR# v1.1.1.7:
- fixed dialog modality issue for setting window (previously it blocked overlapping dialogs of the application)
- added check for supported frequencies (now attempt to set unsupported frequency will lead to cancel and revert back to previous valid frequency)
by qrp
Mon Aug 05, 2019 6:55 pm
Forum: RTL-SDR Discussion
Topic: ExtIO_RTLSDR# - custom ExtIO for RTLSDR
Replies: 26
Views: 9796

Re: ExtIO_RTLSDR# - custom ExtIO for RTLSDR

TarLink wrote:
Tue Jul 23, 2019 10:13 pm
And one more question ! And is it possible to do this with the driver for SDR # ?
This is just ExtIO plugin. It should works with any software which uses ExtIO.
I don't using SDR#, but I will try to find the latest version and check it.
by qrp
Wed Jul 31, 2019 11:48 am
Forum: Troubleshooting Help
Topic: problem with the activation of Bais tee in V3 Donegal
Replies: 1
Views: 485

Re: problem with the activation of Bais tee in V3 Donegal

try to use this ExtIO with HDSDR: https://www.rtl-sdr.com/forum/viewtopic.php?f=1&t=4710&start=10#p11551 It has bias tee switch. You can use it to enable bias tee. Also it allows to see current state of bias tee setting. You can use it to enable bias tee and then cloase HDSDR and open SDR#. But note...
by qrp
Sat Jul 13, 2019 3:04 am
Forum: Troubleshooting Help
Topic: SDR# no device selected
Replies: 13
Views: 17816

Re: SDR# no device selected

if you have trouble with RTLSDR on a modern motherboard with USB3 controllers, try to place rtlsdr.dll from my ExtIO plugin: https://www.rtl-sdr.com/forum/viewtopic.php?f=1&t=4710&start=10#p11551 I build it from the latest RC version of libusb and it should works ok on such motherboards, because thi...
by qrp
Wed Jul 10, 2019 8:45 am
Forum: Antennas
Topic: Strangest thing with my antenna!
Replies: 4
Views: 1791

Re: Strangest thing with my antenna!

My theory is that since I was only using the center conductor, I basically used the 30 or so feet of vertical coax as an antenna (bypassing the TV antenna entirely.) What do you all think? Is my theory correct? No, your theory is wrong. The problem here is that when you connect your antenna complet...
by qrp
Wed Jul 10, 2019 6:25 am
Forum: RTL-SDR Discussion
Topic: ExtIO_RTLSDR_u8.dll with HDSDR 2.76 + dongle
Replies: 11
Views: 2160

Re: ExtIO_RTLSDR_u8.dll with HDSDR 2.76 + dongle

I am noticing that it looks like the noise floor has moved up almost 30db compared to normal levels using the RTL2832 extio. No, noise floor is exactly the same. The difference is that ExtIO_RTLSDR_u8 uses float 32-bit sample format, while classic RTL2832 uses byte 8-bit format. Software can show d...