Hi Matt,

73,
Ron / W4MMP

On 11/14/2021 17:20, Matt Flax wrote:

Is it right that your RF frequencies are tens of MHz ? In that pdf link
I notice it was 14 MHz.

Yes, the RF is the MHz range starting at 1.8MHz and ending at 30MHz (In Amateur radio terms, HF (High Frequency)).


Do you use an amplifier to increase the signal level from the antenna ?

Our products do amplify the received RF via the antenna. There a number of products (not ours) that do not.


Out of interest, what is the signal level before and after the Tayloe
Mixer ?

The received signal is in the uV (micro volt) range. A mid range voltage is ~50uv. I don't recall what the voltage is after the RF amplifier which fed to the Tayloe mixer. Nor do I recall what the output voltage of the mixer is. I need to look at the design specs for that part of the circuit.