SDRplay Community Forum

PPS: It appears SB on 353 khz uses an unmodulated carrier, or ON-OFF keying.

PS: When using the ClassAxe Database if you don't know the call simply enter the frequency in khz in the freq field. It will list all NDB's using that frequency (and several Khz above the entered freq in ascending order)

Hi Paul: I am in the USA so I can't receive any ndb's from Europe. Here is the info I found on the Horta NDB. Carrier freq: 380 Call: FIL LSB:1017 USB:1024 Period:13.6 Details:ID+10" gap Loc:Horta / Faial Island AZR Gridsquare of TX: HM58pm The LSB & USB fields show the modulation frequency for the ...

Some of these RSP2pros had internally reversed A & B port connections. That is, the A input connector is internally connected to the B port and vice-versa. I have also noticed that strong signals can bleed over into the unused antenna input.

Have you tried putting the IFAGC into manual and reducing the slider to minimum (20db) and checking the effect? I have also noticed that some of the settings in SDRUno do not persist, they can change for unexplained reasons. I have seen this happen in the IFAGC setting when in manual mode.

Only if you had some published specs and the equipment to verify those specs.

glovisolL That's an interesting experiment you've done. Very helpful. I have a question. Any ideas why the noise floor is inversely proportional (more or less) to the RF gain setting? More RF gain lowers the noise floor. In my case it was varied from -116dbm at min RF gain to -135dbm at max RF gain....

That's good to hear. As to HF reception there have been zero sunspots for 30 of the last 31 days.

Re: Paul wrote: "As for the bad performance of the active antennae Paul, Is there a possibility that your power supply for the active antennas is overloaded, shorted or open circuited when the active antennas are connected to Hi-Z? A way to check this is to power down the 12 volt DC antenna supply w...

Current versions of SDRSharp will playback SDRPlay I/Q files. No driver required.