38 MHz receiver

The tuner has an IF of 38 MHz so I need a receiver for 38 MHz for a fixed frequency.
The specs:
2 bandwidths 100 KHz and 25 KHz.
Log output.
Optional lineair output.
Dynamic range at least 70 db.

Design :

Building this should not be difficult. It is a straight forward superhetrodyne radio.
The 38 MHZ IF signal from the tuner is filtered by a bandpass filter. The Bandpass consists of three tuned circuits.
Then the signal is mixed in a ne612 with a 27 MHz signal out of a xtal oscillator.
This creates a 10.7 MHz signal which is filtered by a ceramic 10.7 IF filter.
An An7222 AM/FM receiver chip will be used as log detector.
The Ne 612 has two outputs. They can be used to make a balanced output signal. I use only one.
The other output is connected to another 10.7 MHz filter and log detector.
So I will have 2 bandwidths. It is experimental I have not seen this configuration before.

Last night I was working on it. The bandpass filter , mixer , one 10.7 Filter were build and tested.
One of the log detectors was build but I had no time to test it.