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Pioneer - TX-900 - Tuner
Manufacturer:
Equipment:
TX-900
Date:
1969
Category:
Group:
Sub Group:

Information

FM SECTION WITH MULTIPLEX By employing 3 FET's and a 4-gang variable capacitor in the front end section the FM tuner is able to give extremely high sensitivity, improved signal to noise ratio, and utterly stable reception. If noise should arise, due to insufficient antenna input for FM stereo, Pioneer has cleverly included a special noise filter which can be used to eliminate unwanted multiplex broadcast noises. The all solid state circuitry is among the most advanced in the world; including FM multiplex to enable you to tune in on stereo broadcasts with dynamic results. In this multiplex circuit, a time switching de-modulator boosts stereo performance by increasing frequency response and allowing for clear reception of high fidelity sounds. Auto switching provides effortless selection of stereo broadcasts. Cross modulation has been eliminated in the front end. IF SECTION WITH 2 CRYSTAL FILTERS Pioneer has used 2 crystal filters in the IF section to give the TX900 remarkable selectivity and an excellent capture ratio. The hard limiting IF section has extra stability and far better channel separation than usual, all thanks to the use of 4 IC's. SELECTIVE MUTING Besides the noise filter for FM stereo, the TX-900's circuitry also incorporates a unique adjustable muting switch which can totally eliminate interchannel noises. The unique feature of this switch is that the cut-off level is continuously variable so that while the noise can be supressed to any level required you can still select the weakest signals. PRECISE STATION SELECTION To put you on both AM and FM bands Pioneer's new bright spot indicator lights up at the place where a signal is being received. There are then twin tuning meters to put you exactly on the station. These are located at the left of the dial scale. One tells you FM signal strength and the other shows you the precise tuning point of the signal. These useful meters allow you to obtain a point where signal strength has the minimum distortion, maximum fidelity and channel separation, and where the signal to noise ratio is ideal. AM TUNER In the AM section there's a separate oscillator and mixer with 1 RF stage to handle strong signals with less spurious interference. A DESIGN TO SUIT ITS FEATURES The TX900 is a beautifully designed unit externally also. End pieces are of expensive Brazilian rosewood while controls are elegantly set on a brushed chrome panel. The tuning control is on a wide multi-colour illuminated dial scale and is extra large for fine adjustments. On the back is an adjustable ferrite bar antenna; an easily switchable line voltage selector so you can use the TX-900 anyplace in the world; and a variety of jacks to give this set the versatility to match the performance of any other units in your system.

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2 Manuals

Datasheet
Manual type:
Datasheet
Pages:
2
Size:
2.7 MB
Language:
english
Revision:
Manual-ID:
Date:
January 1969
Quality:
Scanned document, all readable.
Upload date:
Aug. 30, 2020
MD5:
73eb3273-81da-93aa-b45d-2b63618c83b5
Downloads:
97
Schematics diagram
Manual type:
Schematics diagram
Pages:
7
Size:
2.7 MB
Language:
english
Revision:
Manual-ID:
Date:
Quality:
Scanned document, all readable.
Upload date:
Aug. 30, 2020
MD5:
4b913304-bd3b-aefe-53d0-c1f271d4b4f8
Downloads:
70