Search found 356 matches

by g1hbe
Fri Oct 19, 2018 12:26 pm
Forum: SDRuno
Topic: Keyboard Entering Of Frequencies ?
Replies: 1
Views: 86

Re: Keyboard Entering Of Frequencies ?

First click the tuning cursor away from the central LO frequency. This will save trouble later. Now press the space bar. This puts you in 'freq entry' mode. Then enter your 10.2 (or whatever). Then hit M on your keyboard. You should now be on your chosen frequency. Now you can choose the mode - AM, ...
by g1hbe
Fri Oct 19, 2018 7:32 am
Forum: SDR Antennas
Topic: Antenna conector
Replies: 3
Views: 186

Re: Antenna conector

All antenna connectors are female SMA, so you'll need MALE SMA leads to stick in them. The only exception is the Hi-Z connector on the RSP2 and the Duo, which is a 3-pin type like this: https://www.sdr-kits.net/Hi-Z-Connector-RSP2
by g1hbe
Sat Oct 13, 2018 4:03 pm
Forum: SDRuno
Topic: Drivers won't install
Replies: 2
Views: 177

Re: Drivers won't install

I don't claim to be an expert in Windows or RSP drivers, but there's plenty of chatter about having to make sure W7 is fully updated or the drivers won't go in. Probably a few threads on here if you go back a bit.
by g1hbe
Mon Oct 08, 2018 7:59 am
Forum: General
Topic: Noise?
Replies: 2
Views: 235

Re: Noise?

You won't get good signals on the HF bands from a standard discone, they are for VHF only. A long wire or dipole (depending on your circumstances) is more suitable. A low noise solution is an active loop like the Wellbrook 1530.
by g1hbe
Wed Oct 03, 2018 12:59 pm
Forum: SDRuno
Topic: my problem with ..uno
Replies: 3
Views: 341

Re: my problem with ..uno

It's buried on page 25 of the manual, just above section 7. It'd help if it was called 'audio filter'.
by g1hbe
Mon Oct 01, 2018 10:21 pm
Forum: SDR Antennas
Topic: Loop Construction
Replies: 9
Views: 1069

Re: Loop Construction

Gazza, is this for a tuned loop with a capacitor at the top or a wideband untuned (active) loop? If it's for an untuned loop, I use a plastic hula-hoop with a turn of thick wire inside.
by g1hbe
Wed Sep 19, 2018 10:24 pm
Forum: SDRplay related
Topic: RSP-1 as a bat receiver?
Replies: 5
Views: 2698

Re: RSP-1 as a bat receiver?

My detector is a self-contained one with a pre-amp, mixer and audio amp driving a small speaker. There's high-pass filtering in the pre-amp and low-pass in the audio amp so there's no 'howl round' from speaker to mic. The local oscillator is tunable over approx 15 to 40 KHz. I've recently found a ra...
by g1hbe
Wed Sep 12, 2018 11:50 am
Forum: General
Topic: Testing RSPduo receiver sensitivity with noise generator
Replies: 51
Views: 7198

Re: Testing RSPduo receiver sensitivity with noise generator

Glovisol, has something gone amiss with your calcs? Those attenuators won't be anywhere near 46 dB. You'd need about 5k in series.
by g1hbe
Tue Sep 11, 2018 4:15 pm
Forum: General
Topic: RSP1 not detecting frequency
Replies: 6
Views: 470

Re: RSP1 not detecting frequency

Simplest way is to click the tuning cursor to one side of the centre LO frequency, then type in your required frequency (or tune there with your mouse wheel). You can hover your mouse over the digit you want to change and then use the wheel.
by g1hbe
Tue Sep 11, 2018 3:01 pm
Forum: General
Topic: RSP1 not detecting frequency
Replies: 6
Views: 470

Re: RSP1 not detecting frequency

Select AM mode and the 6 KHz bandwidth setting. Or wider if there are offsets in use. Also make sure your receive frequency and the displayed LO frequency are NOT the same. If they are you will get weak reception and distortion. This catches out a lot of beginners!

Go to advanced search