you can also construct your own from regular resistors, you can contact us for a schematic diagram: http://www.pcs-electronics.com/mounted-attenuators-p-1105.html BEFORE CONNECTING AMPLIFIER ALWAYS MAKE SURE THAT EXCITER OUTPUT POWER DOES NOT EXCEED MAXIMUM ALLOWABLE INPUT POWER OF THE AMPLIFIER!
Together with a good directional antenna this high performance two-stage antenna amplifier for the VHF FM broadcast band will enable you to capture far removed (DX) stations. Alternatively, it will drastically improve reception of FM signals you’ve come to accept as marginal and noisy in your ...
This is a low cost fm antenna booster that can be used to listen to programs from distant FM radio stations clearly. The antenna fm booster circuit comprises a common-emitter tuned RF preamplifier wired around VHF/UHF transistor 2SC2570 (C2570). Assembl
Modified Repco power amp schematic The exciter/stereo generator and power amplifier viewed from the rear. A switch on the rear of the exciter/stereo generator selects the unit's operating mode - mono or stereo. The small aluminum box houses a 120 MHz low-pass filter. Horses...
Have you ever wanted to broadcast your own radio station within your neighborhood? This small and simple 87-108MHz FM transmitter is the toy that geeks have always wanted. This tutorial includes the PCB layout and the schematics. It has a range of up to 1/4 mile or more. It's great ...
The FM broadcast band has been with us since the middle of the 20th century, and despite many tries to unseat it, remains a decent quality way to pick up your local stations. It used to be that building an FM broadcast receiver required a bit of RF know-how, but the arrival of all...
The Si473x-D60 integrates a low noise amplifier (LNA) supporting the worldwide FM broadcast band (64 to 108 MHz). An AGC circuit controls the gain of the LNA to optimize sensitivity and rejection of strong interferers. An image- reject mixer downconverts the RF signal to low-IF. The ...
The RDA5807 is an FM DSP integrated circuit receiver that operates in the 50 to 115MHz range and includes support for a low-noise amplifier. This device requires fewer external components compared to other similar products and offers features such as RDS/RBDS functionalities, direct auto gain co...
The present invention is directed to circuitry for providing an extremely linear audio FM modulator for use in a cable television or broadcast distribution system. It has been found that voltage controlled oscillators using current switching techniques and operating below 1 MHz are inherently linear, ...
Rolls Corporation HR78 AM FM Digital Tuner 用户指南说明书