Re: ISB Receivers
Re. #45, thanks to RW from me too re. the operation of the H2900 synchronous demodulator
Re. #46, The 2MHz oscillator was derived from the H2900 frequency standard system.
The synchronous detector in the Lowe HF-150 worked by adjusting the 2nd LO frequency, via a PLL. The synchronous detector injection frequency was derived from a crystal oscillator.
Re. #47, and the Eddystone EC958/12, I have read that the EC959/9 also had ISB capability. How it was done, and how it compared to the EC958/12, I do not know.
73 John KC0G
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