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TOA 870 Wireless VHF Receiver Quad Rackmount System. Condition is Used.
This is a pair if TOA 870 tuners, each with two tuner modules (4 in total). linked and with rack mount ears.
Frequencies:173.800 MHz174.100 MHz174.800 MHz175.000 MHz
License free frequencies.
From the manufacturer:GENERAL DESCRIPTIONDesigned for virtual elimination of problem “null spots” or “dropouts” (momentary loss of radio signal reception), the TOA WT-870 is a diversity tuner that permits simultaneous use of up to two optional wireless tuner modules WTU-870 and WTU-871. To ensure its reliability, the WT-870 employs a compressor/expander system noise reduction circuit to minimize the influence of high-frequency noise generated from digital equipment such as personal computers and word processors as well as a combined noise/tone squelch circuit.HANDLING PRECAUTIONSCheck for proper operating voltage of your tuner before use.
FEATURESDiversity reception system minimizes the effects of fading during reception of a radio signal.A tone squelch prevents disturbing radio signals from producing noise when the wireless microphone is not in use.Modular construction facilities channel expansion and frequency changes.Space-saving design and simultaneous dual channel operation.Rack mountable. (Optional brackets required.)Wide dynamic range and less susceptibility to high frequency noise in space thanks to a compressor/expander circuit.
ADDITIONAL EXPLANATIONS1. Diversity ReceptionConventional single-antenna system receivers have often produced “null spots” where a radio signal is suddenly lost during its reception. The diversity reception method enables stable signal reception all the time.2. Squelch CircuitIn a receiver employing only a noise or carrier squelch, the squelch circuit is actuated and provides the output whenever the receiver receives the same RF carrier as a receiving frequency. This causes even a disturbing radio signal to be received provided its frequency is the same as the receiving frequency. As a result, it can happen that sound is suddenly heard from the speaker due to disturbing radio signal even when the wireless microphone’s power switch is left OFF.The squelch circuit of TOA’s wireless systems consists of both the tone and noise squelches, and is not actuated if only same RF carrier as the receiving frequency is received. It is so designed as to be actuated and output a signal only when the received RF carrier contains a very exact pre-determined tone frequency component. Therefore, disturbing radio signals are rejected and the speaker can be kept completely quiet when the wireless microphone’s power switch is set to OFF, ensuring reliable use in every application.
Units all power up ok (see pics) but I dont have any way of testing further. No aerials or microphones included.
Dispatched with Hermes tracked.
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Category: Musical Instruments:Pro Audio Equipment:Microphones
Location: Birmingham