TAPR announces RF Limiter for receiver protection

[John Ackermann N8UR]

I needed to protect a sensitive 6M LNA from the 6M kilowatt amplifier
and high-gain antennas we use at N8GA during VHF contests. I came up
with a simple and low-cost design to do this. Since others might find
it useful, we've turned it into a TAPR product that is available for
sale now.

It's a very simple circuit that starts limiting when the RF input
exceeds about -6 dBm and limits the total power presented to the front
end to less than +10 dBm. A small series resistor acts as a fuse so
that even if the input reaches a watt, the unit will fail with an open
circuit rather than letting that power through. The small-signal
attenuation is <1 dB through the 6M band.

You can find more details and order the RF limiter at:
https://tapr.org/product/rf-limiter/

73,
John