Hi Jared
Thanks for reply and info.
Yep I think the problem with wideband front end selectivity.
I intended to use hackrf to tracking satellites.
During the last 12 hours I was trying to received any satellite with all setup
configurations ie (amp on and off LAN up or down , preamp on and off changing
my cross yagi polarization etc)
I used funcube dongle and rtl with great succes even with my mast preamp .
For sure I still miss something with Hackrf.Nader/st2nh
From: Jared Boone <[email protected]>
To: Nader Omer <[email protected]>
Sent: Friday, January 15, 2016 1:47 AM
Subject: Re: [Hackrf-dev] Hackrf Rx sensitivity
I only use the "amp" as a last resort, especially in VHF and UHF. The RF
amplifier is wideband (1MHz to 6GHz), switched in right after the antenna. If
you're near strong signals (e.g. living within 50km of broadcast FM or
television stations), the RF amplifier will happily over-amplify those very
strong signals and they will splatter across the VHF and UHF regions. I
typically use the RF amplifier only with a pre-selector filter, or an antenna
built for a specific band or that is highly directional, so I can control how
much broadcast garbage gets to my RF amplifier. Otherwise, I rarely use VGA and
baseband gains of more than 32dB, each. I'm not sure what your software calls
those gain settings, but they're the gain controls just before the second IF
and after the baseband filter -- both inside the MAX2837 chip.
I hope that helps,
- Jared
On Jan 14, 2016, at 14:28, Nader Omer via HackRF-dev
<[email protected]> wrote:
Any issues about hackrf receiving sensitivity ??
I crank up LAN and Amp to upper limit and still I found it very poor in
sensitivity compare to other SDR devices.!!!
I used HF antenna,Yagi Antenna,vertical antenna.
software SDRSHARP. SDR-RADIO and gqrx.
I'm thinking of front end pre-selector ??
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