Loran Antenna - RF Cafe Forums
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Post subject: Loran Antenna
Posted: Mon Dec 05, 2005 9:53 am
I am trying to receive Loran (100 KHz) signal
using H field and E field antenna.
field antenna has o/p impedance 50 ohms and a gain
of 20 dB. I pass this signal through a LNA (30 dB
gain) and then BPF and I get a very clean loran
The H field antenna has o/p impedance
50 ohms and a gain of 20 dB. I pass this signal
through the same circuit and then I pass it through
another 30 dB gain amplifier (as H field recieved
signals are weaker than E field received ). I dont
get a clean loran signal.. It is pretty messed up.
I know that my second amplifier works good as
I have tested it with the E field antenna.
What is the problem. Is H field antenna highly
sensitive and hence it picks up a lot of noise,
I thought impedance matching could
be a problem... but then the E field works with
the same circuit.
Please guide me on this
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