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Ring Diode Mixer Substitutions

Jan 22nd, 23:32

W7TCM

Joined: Dec 5th 2011, 04:48
Total Topics: 0
Total Posts: 0
Can a Mini-Circuits TUF-3 be substituted for a Mini-Circuits SBL-1 in a SSB circuit for 40 meters? The TUF-3 is a 4-pin design and the SBL-1 is an 8-pin design, so it requires a different socket. Otherwise, the gain, operating frequency range, isolation levels, voltage, amperage and schematic appear to be equally suitable for 7 MHz processing. Is there an impedance issue, or something else, that prevents the use of the TUF-3 in place of the SBL-1 in the design (MicroR2)?
Jan 23rd, 03:35

W1VT

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0

The data sheet minimum LO isolation is just 30 dB--there could be issues with excessive carrier leakage--the only practical way to find out is to build one and measure it.

Zack W1VT
ARRL Senior Lab Engineer

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