AM/FM Tuners

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Last Edited:
12-Sep-2004

TYPE IMAGE
(Click to see Full-size)
CONFIGURATION YEARS (approx) COST NEW ($) COMMENTS, TUBES
(tech notes)
300(A) Scott_300.jpg (20852 bytes) AM/FM-Mono Tuner 1957-1959 $140
1st Scott Wide-band AM/FM Tuner to incorporate "Slide-Rule" Tuning Dial,
6BR5 (EM80) Tuning eye, very similar to 320: but without front panel level control and multiplex adaptor switching,:

Common AM/FM tuning gang/front-end, (only Scott AM/FM design to use sidewinder mounted tuning gang)
No support for Simulcast, as in 330/331 series; external AM antenna (no rod), MPX output
wide "C" case/chassis

While the 300/320-series were never very popular, the basic common AM/FM tuning gang design was sensitive enough to resurface in the very respectable Type 355 and 380 receivers.

9 Tubes:
AM Section FM Section
(1/2) 6U8 (1/2) 6U8
6BE6 6U8
6AU6 6AU6 (2)
6BR5/EM80 
12AU7 (AF amp) 6X4 (Rectifier)
320 Scott_320_Front.JPG (24831 bytes)

Scott_320_Top_back.jpg (32595 bytes)
AM/FM-Mono
 Tuner
1959-1960 $150
Updated Type 300
with improved FM performance
with "Slide-Rule" Tuning, 6BR5 (EM80) tuning-eye, added front panel level control, multiplex/normal switch (for use with 335)
and AM Rod antenna.

No support for Simulcast, as in 330/331 series, Common AM/FM tuning gang/front-end,
MPX output
wide "C" case/chassis

Early model 320's used 300's 9-tube design:
Late model 320's used 10 Tubes:

AM Section FM Section
6BA6 6BS8/(6BQ7)
6BE6 6U8A
6AU6 6AU6 (2)
6AL5 6BR5/EM80 
12AU7 (AF amp) 6X4 (Rectifier)
330(A) AM/FM-Mono
"Simulcast Stereo"
Tuner
1955-1956 $180
1st Scott AM/FM Tuner,

Reception of Simulcast (AM-Left/FM-Right) Broadcasts, (separate front-ends)
 early versions had red plastic dial pointers, three-way AM Selectivity settings (Wide-Range AM),

Introduced the wide, "C" Case/chassis format, later featured on the 299 family.

12 Tubes:
AM Section FM Section
6BA6 6BS8
6BE6 6U8
6AU6 6AU6 (3)
6AL5 12AU7
12AU7 6X5 (Rectifier)
330-B Scott_330.jpg (10357 bytes) AM/FM-Mono
"Simulcast Stereo"
Tuner
1957-1958 $190
Reception of Simulcast (AM-Left/FM-Right) Broadcasts, (separate front-ends)
Silver-Plated (Modular) Front End Introduced,
three AM Selectivity settings,
used wide "C" Case/chassis.
Rectifier updated.

12 Tubes:
AM Section FM Section
6BA6 6BS8
6BE6 6U8
6AU6 6AU6 (3)
6AL5 12AU7
12AU7 6X4 (Rectifier)
330-C Scott_330C_Front.jpg (12751 bytes) AM/FM-Mono
"Simulcast Stereo"
Tuner
1959-1960 $220
Reception of Simulcast (AM-Left/FM-Right) Broadcasts, (separate front-ends)
three AM Selectivity settings,
used wide "C" Case/chassis.
AM "rod" antenna added, 

12 Tubes:
AM Section FM Section
6BA6 6BS8
6BE6 6U8
6AU6 6AU6 (3)
6AL5 12AU7
12AU7 6X4 (Rectifier)
330-D Scott_330D.jpg (12082 bytes) AM/FM-Mono
"Simulcast Stereo"
Tuner
1960-1962 $220
Improved Simulcast switching functions,
 "Stereo" phase reversal switch added,
front panel updated,
the 330-D was phased out with introduction of the 333 which added true MPX-Stereo.

Used wide "C" Case/chassis, 
Note: 6CN7 replaced 6AL5.

12 Tubes:
AM Section FM Section
6BA6 6BS8
6BE6 6U8
6AU6 6AU6 (3)
6CN7 12AU7
12AU7 6X4 (Rectifier)
331(A) AM/FM-Mono
"Simulcast Stereo"
Tuner 
with Mono Preamp
1956-1957 $260
Similar to 330(A)
Addition of two 12AX7's used in monophonic preamp section accommodating:
Phono (Mag 1/2), Tape and TV (mono) inputs, Concentric Bass and Treble tone controls, Loudness compensator.
Early versions had "red plastic dial pointers" 

featured I/O-"loop" jacks for optional outboard noise suppressor

 used wide "C" Case/chassis

14 Tubes:
AM Section FM Section
6BA6 6BS8
6BE6 6U8
6AU6 6AU6 (3)
6AL5 12AU7
12AU7
(2) 12AX7 (preamp) 6X5 (Rectifier)
331-B AM/FM-Mono
"Simulcast Stereo"
Tuner 
with Mono Preamp
1957-1958 $260
Similar to 330-B
Addition of two 12AX7's used in monophonic preamp section accommodating:
Phono (Mag 1/2), Tape and TV (mono) inputs, Concentric Bass and Treble tone controls, Loudness compensator.

featured I/O-"loop" jacks for optional outboard noise suppressor

 used wide "C" Case/chassis

14 Tubes:
AM Section FM Section
6BA6 6BS8
6BE6 6U8
6AU6 6AU6 (3)
6AL5 12AU7
12AU7
(2) 12AX7 (preamp) 6X4  
or
5X4 (
 
331-C Scott_331C.jpg (39122 bytes) AM/FM-Mono
"Simulcast Stereo"
Tuner 
with Mono Preamp
1958-1960 $260
Similar to 330-C
Addition of two 12AX7's used in monophonic preamp section accommodating:
Phono (Mag 1/2), Tape and TV (mono) inputs, Concentric Bass and Treble tone controls, Loudness compensator.

featured I/O-"loop" jacks for optional outboard noise suppressor

 used wide "C" Case/chassis

14 Tubes:
AM Section FM Section
6BA6 6BS8
6BE6 6U8
6AU6 6AU6 (3)
6AL5 12AU7
12AU7
(2) 12AX7 (preamp) 6X4 (Rectifier)
 
333 Scott_333.jpg (18014 bytes) AM/FM-MPX
"Simulcast Stereo"
with true MPX Stereo
1962-1963 $240
True MPX-stereo version of 330-D,
(the 333 has three slide switches, as opposed to the 330's one slide switch)

Incorporated the "Sonic Monitor" features of the Type 350 FM/MPX design.

Still accommodated reception of Simulcast (AM-Left/FM-Right) Broadcasts, 

Used selenium rectifier for B+, eliminating the 6X4 rectifier tube.
Used wide "C" Case/chassis

13 Tubes:
AM Section FM Section
6BA6 - V301 6BS8/6BQ7 - V201
6BE6 - V302 6U8 - V202
6AU6 - V5 (2) 6AU6 - V1/V2
6AV6 - V6 6HS6 - V3
12AT7 - V4
6BL8 - V501
(2) 12AU7 - V502/03

 

333-B Scott_333B.jpg (19793 bytes) AM/FM-MPX
"Simulcast Stereo"
with true MPX Stereo
1964-1965 $290
Similar to 333 above

Updated Extruded Front Panel Styling
(Capped or "Pegless" Tuning Knobs),
Dark Brown Tuning Dial backgrounds,

used wide "C" Case/chassis

13 Tubes:
AM Section FM Section
6BA6 - V301 6BS8/6BQ7 - V201
6BE6 - V302 6U8 - V202
6AU6 - V5 (2) 6AU6 - V1/V2
6AV6 - V6 6HS6 - V3
12AT7 - V4
6BL8 - V501
(2) 12AU7 - V502/03

 

 

For a detailed technical description see: John Byrns's History of H.H. Scott Tuners.

Note: Scott AM-FM Tuners were never offered in Kit Format.

 

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