Frequency response of Ports A and B below 1.5 MHz?

[tracey.gardner]

The SDRPlay RSP2 has 3 antenna ports. For 50 ohm, port A and B and also a high-Z port.
Ports A and B are specified for reception of 1.5 MHz - 2 GHZ.

Can anybody please tell me the actual frequency response of Ports A and B below 1.5 MHz?

Many thanks

Tracey G5VU

[g1hbe]

I'm sure the tech team can answer your question, but I've found that both A & B ports start to lose sensitivity below 1.5 MHz. Port B is the worst as it has the bias-T circuitry to cope with. The Hi-z port works supremely well down to a few KHz but it does not have access to the MW rejector, which is a shame. For listening to the beacon band and VLF time-signals I have to use a homebrew LPF. The RSP2 works very well at LF when treated to a decent LPF (see attached image). The hump around 100 KHz is LORAN.