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Old 11th Dec 2017, 9:24 pm   #9
Jon_G4MDC
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Join Date: Nov 2015
Location: Welwyn Garden City, Hertfordshire, UK.
Posts: 2,013
Default Re: Hatfield modulator: info.?

For sure Port B is the IF port and looks to be DC Coupled.
Ports A and C appear similar and could be LO&RF probably almost interchangeable.
Single diode ring so probably for about +7dBm / 5mW LO Drive.
For testing drive it harder than described above.

Nice at HF - not sure about 300MHz upper limit though.

Last edited by Jon_G4MDC; 11th Dec 2017 at 9:30 pm.
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