Fisher 80 T Brochure

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IRE F'sui'

,6 w ,

MODEL 80-R
FOR USE WITH EXTERNAL CONTROL CHASSIS

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THE FISHER FM-AM TUNERS

THE FISHER FM~AM Tuners enjoy an unparalleled reputation its the most critical \ptt'ifitalinns. These same high standards of performance,
unquestioned lender in the field. The rnstcr of professionals using 'I'Hl. mu lllcr with thc uncompromising quality til workmanship for which
FISHER includes the nulncs of some of the most outstanding nrgani- 'I'HI l'lSllliR is Izuuntts. are available to you, for use in vnul' own home.
zations ill the research, broadcasting, and educational fields. THE Amcri first FMVAM tuners with two mctelsijuxt one of the manv
FISHER provitlcs ti level of performance that flu: exceeds even their unique Iculures you Will find listed below. 1

MODEL BO-R

FM SECTION _ 0 Professional, nlicro~accurate tuning meter,
0 Dual antenna inputs: 72*Olllll and eleusiue 300-ohnl balanced.

eparati- front end for FM: cascade tuned RF stage, for maximum Signalrtomnise ratio.

0 l'wo IF stages followed by 2 cascaded limiters and a Foster-Seeley Discrirninator: a genuine
Armstrong System, universally recognized as the ultimate in FM.

0 Adjustable Automatic Frequency Control on front panel.

. SENSITIVITY: Full limiting on signals as low as l uv 0n 724mm antenna input, IV) uv for
20 db of quieting, 2% uv for 30 db of quieting. On 30(J»ohm input, 3 uv for 20 db of quieting.

0 FREQUENCY RESPONSE: :05 db, 20 to 20,000 Cycles.

Professional, micro-accurate tuning meter.

0 Dual antenna inputs for loop or external antenna.

0 Separate front t-nd for AM: one tuned RF stage
, 0 Two adjustable band-width IF stages.

C 10 kc whistle filter.

SENSITIVITY: Less than 1 uv for full output.

O FREQUENCY RESPONSE: In broad-tuning position: :2 db to 6000 (73 db at 7000) cycles.

In sharp-tuning position: 76 db at 6000 cycles.

AUDIO SECTION '4' I 'Illrec high impedance inputs direct to cathode follower,
I FREQUENCY RESPONSE: :05 db, 20 to 20,000 cycles.
gt 0 Cathode follower output permits leads up to 200 feet.
CONTROLS %
GENERAL FEATURES

AM SECTION

n Variable AFC/Power Switch: Selector Switch (AM BROAD, AM SHARP, FM, PHONO,
AUX l, AUX 2) ; Station Sclcctor; Output chcl Control.

o Scll»powered.

Completely shielded construction, including bottom plate and variable taparilol' cover.
a Six-gang variable capacitor.
0 Flywheel tuning mechanism, with anti-backlash gear.
0 Chassis Fompletely shock»rllollnted.
I Attractive brushed-brass control panel.
AM Loop and FM dipole antenna supplied.
% o Edge-lighted dial glass with U , l00 lugging «all:

I Cabinet available in Blonds or Mahogany.

TUBE COMPLEMENT
PHYSICAL DATA

MODEL 80-T

AUDIO SECTION m

e Total of 13: 2-68Q7A; Leone; l-GBEG; malts; 2.5m; 1.6AU6; 1A6AL5z2-6C4; l-6X4.
o Overall dimensions: 123/4" wide, 82/," deep, 4" hit; . Allow an additional 1 depth for control
knobs. Shipping Weight: l6 pounds.

FM AND AM SECTIONS ARE THE SAME AS MODEL BO-R DESCRIBED ABOVE, BUT INCLUDES,
ON A SEPARATE INTERLOCKED CHASSIS, COMPLETE PROFESSIONAL CONTROL FACILITIES

a Eleutiue, separate tape head playback preamplifier, equalized to the NARTB characteristic.
0 Preamplifier-Equalizer consists of two cascaded triode stages, and has adequate gain for even
we. the lowest level magnetic pickup.

l Full tboice of six record equalization settings.

0 Variable Crossoventypc Bass and Treble Tone Controls afford up to 15 db of boost and cut
at 50 and 10,000 cycles respectively.

O FREQUENCY RESPONSE: 105 db, 20 to 20,000 cycles,

' DISTORTION: Less than .U47r for 1 volt output, 05% for 5 volts output,

. HUM LEVEL: On radio, better than 72 db below 2 volts with Volume Control at max-
imum, nanrmeammble with Volume Control at minimuln. On phono, better than 60 db
below output with 10an input signal,

' Two outputs low impedance cathode follower type: one before Tone and Volume Controls for
recorder, plus l main output for connection to power amplifier. Cable lengths can be up to 100 it.

GENERAL FEATURES . Self-powered, with DC supply for all audio tube filaments.

0 Complete shock-mounting for both tuner and audio chassis.

' Two AC power outlets at rear of audio chassis.

. Cabinet available in Blondc or Mahogany.

I Bass Control; Treble Control: Equalization Selector Switch lEUR, AES, RIAA, LP, NAB,
78 and TAPE) ; Volume Control ; Loudness Balance Control ; AFC Control/Power Switch : (Khan-
ncl Selector (AM BROAD, AM SHARP, Fl, PHONO. AUX l, AUX 2i; Station Selector.

l'lotal of 16: 2-6BQ7A, l-6BtlB6, l-(SBEG, 1-6AU6, l~6AL5, 2.12Ax7, Z-GBJG, 3.6m, 2-6U8,
1-6x4.
.Overall dimensions: 123/4" wide, 83/." deep, 6" high. Allow an additional 1" depth for

control knobs.
- Shipping weight: 21 pounds.

CONTROLS

J TUBE COMPLEMENT

PHYSICAL DATA «i

9924350795