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Fm Fm Modulator

https://www.fmtvzhc.com/fm-fm-modulator/

Getting started; Fm Fm Modulator; Fm Fm Modulator - China Manufacturers, Suppliers, Factory. Our merchandise are commonly recognized and reliable by customers and can meet constantly developing economic and social desires for Fm Fm Modulator, Rf Transmitter, Professional Fm Station, Dummy Load,Stereo Audio Transmitter.We have now designed a reputable track …

PC keyer and AM modulator - sv3ora

http://qrp.gr/keymod/

For voice communication or broadcasting music (into a dummy load) you just use the internal key switch as a PTT to handle these modes. Results Prior to building the keyer and the modulator in the same device, I had tested the circuits independently quite a few times, to ensure the results can be reproduced.

HomeBrew Transmitter - Ohio University

https://people.ohio.edu/postr/bapix/HB6meter.htm

Modulator repair Audio input made no variations in the glow from the dummy load. The modulator was not working. The modulator is a relatively simple standard circuit with two triode sections in the 12AX7 as speech preamp and amplifier feeding a larger-than-needed interstage transformer to the grids of the 5881 modulator tubes.

Dummy Load-FM Radio Transmitter Digital TV Transmitter ...

https://www.zhcfmtv.com/portal/list/index/id/96.html

Dummy Load-Hangzhou Zhongchuan Digital Equipment Co., Ltd. FM Synchronous Broadcast Equipment. 30W~100W FM Synchronous Broadcast Exciter

AM modulator with MC1496 project problem - All About Circuits

https://forum.allaboutcircuits.com/threads/am-modulator-with-mc1496-project-problem.38171/

i don't use antenna but 50ohm dummy load. I am using 4.7ohm variable resistance to adjust the carrier at the point that i have the maximum output r.f signal with the best modulation in radio. Lower resistances of 2kohm increse the outpur r.f signal but the modulation in radio is not very good.

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