Many people use active receive antennas on the LF/MF bands; I use a commercial Procomm active whip which sits under my 137kHz Tee. It is happy to exist in the high E-fields generated when transmittin
Can you "mute" the receiver, i.e. kill the internal power during TX, possibly just to your LT5524 stage, short circuit the input before it reaches anything active or kill the power to your active ant
Yes, there are plenty of options for normal Tx/Rx. In fact the existing C/O relay in the 137 transmitter provides more than enough isolation for that But I was on a separate active whip at the time,
Am 01.12.2015 11:39, schrieb LineOne: I don't rate diodes, even faster ones than the 1N914/4148, for overload protection, they do make good mixers to receive broadcast signals off Long Wave. [...] Hi
For sharp spikes coming out from the cable I suggest some ferrite bead or a VK200 choke on the receiver input. I believe they have no attenuation at LF frequency. 73 de Claudio ik2pii -- Claudio Poz
I assume that as this is high impedance and tiny current into the amplifier that ferrite beads may not be quite so so effective. I do like them though, cheap and easy, removable with no damage. If yo
Its the output that causes the problem, and anyway ferrite beads were suggested on the input to my receiver RF amplifier , the LTC5524. In retrospect I will probably change the distribution of gain i
