hammarl-mf: SP-100 Series; General information

Additional Information for the Hammarlund Super Pro SP-100 Series receiver

The Super Pro SP-100 Series is a super-heterodyne receiver with two RF stages, mixer, HF oscillator, three stages of IF amplification, combination fourth IF stage and detector, amplified AFC, beat frequency oscillator, and three stages of AF amplification.

The Hammarlund Super Pro 100 Series consists of two major units: the receiver and the power supply unit.

Two receiver panels were available:
Table model SP-100 Series:  w: 18” x h: 10 15/32” x d: 14 7/32”
Rack model SPR-100 Series:  w: 19” x h: 10 15/32” x d: 14 7/32”

The power supply unit was also available as:
Table model:  w: 13” x h: 7 5/8” x d: 8 1/2”
Rack model:  w: 19” x h: 8 3/4” x d: 8 1/2”

The delivery of the receiver not only includes the PSU, always included was a Jensen Speaker 8” or 12” (some sources mention 10” instead of 8”). The speaker came without any enclosure, only the chassis. Built-in Speaker 15” for Super Pro Console.

A special cable can be furnished to permit emergency operation from:
one “A” 6 Volt storage battery, and
five “B” 45 Volt dry batteries, and
one “C” 45 Volt dry battery.
No change in the receiver is necessary for battery operation.

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Designation system of the Super Pro SP-100 Series models:

Cabinet:    SP-   Table top
              SPR- Rack version

Speaker:   110    8"
              120  12"
              150  15"

Typical frequency ranges:
              _   540-1160 kHz / 1,16-2,5 MHz / 2,5-5 MHz / 5-10 MHz / 10-20 MHz
              L   100-200 kHz   / 200-400 kHz  / 2,5-5 MHz / 5-10 MHz / 10-20 MHz
              S   1,25- ? MHz   / ? - ? MHz      / ? - ? MHz  / ? - ? MHz /  ? -40 MHz

Crystal filter:   _   No
                    X  Yes

Remarks:
Not all possible combinations were produced.
Other band choices were also offered.

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Any proven additional information will be welcome.

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