af) Heathkit Linear Master Oscillators (LMOs)
This section contains information on the Heathkit Linear Master Oscillators used in the
SB series of transmitters, receivers, and transceivers.
In all cases, the LMO tuning range is from 5.0 MHz to 5.5 MHz with a slight overlap at
each end. Due to the mixing scheme use, 5.5 MHz corresponds to the low end of the
band and 5.0 MHz corresponds to the high end of the band.
af.1. LMO Part Numbers & Usage
Model Part No: Tube Comments
HW-100 6AU6 FET oscillator with 6AU6 as VFO amp.
HW-101 6AU6 FET oscillator with 6AU6 as VFO amp.
SB-100 110-32 6BZ6
SB-101 110-40 6CB6
SB-102 110-48 Transistors
SB-110 110-28 6BZ6
SB-300 110-13 6AU6
SB-301 110-40 6BZ6
SB-310 ? 6CB6
SB-400 110-13 6AU6
SB-401 110-32 6BZ6
SB-640
Table 12. Heathkit LMO Part Numbers & Usage
Heathkit Linear Master Oscillators (LMOs) Page 116
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