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Amplification problem has been fixed, by using a bandpass filter instead of high or lowpass filters by themselves.
Antenna is connected to the 220pF capacitor and any disturbances or movements near the antenna (up to ~10m), create low frequency signals that appear at the base of the radio oscillator transistor, which are then bandpass filtered to remove the DC bias and High frequency signals, so only the low frequency disturbances are amplified.
Output of amplifiers cannot draw much current (Work in Progress) but produces a good enough result for further testing.
Unsure of actual working frequency as i dont have the required tools to accurately measure such frequencies, however it is 100% above 200 MHz.
I built an OP AMP version as well which works much much much nicer than BJT's as we are working with low frequency amplifiers so we can work smarter by using OP AMPS instead, I used non-inverting configuration with two stages coupled by RC bandpass filters with respective amplifer gains of 48 and 23.
This circuit is almost identical to the VT Fuze circuit from WW2, except has been modernised with transistors instead of tubes. I am genuinely surprised by the fact that there is practically no information on a circuit like this one anywhere on the internet. I hope the info i have provided is enough to satisfy the desire to understand the construction of a RADAR circuit in more detail than the internet provides.
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