CZH 7C FM transmitter review

I would advise against this transmitter. The transistor is a fake mitsubishi RD06HVF1 and doesnt put out much power. invest a bit more and you will get way better quality than these.

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Education

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• CZH
• transmitter
• review

[kmecum97]

Oh crap, I just put in my order yesterday for $92. I just need it to transmit FM at least a 1 acre distance, do you think this will suffice? By the way, how do you test the wattage?

[pickford7812]

@kmecum97 it will go one acre easy on low power. I wouldn't run it at high power if you're in a higher population. if your area has gone to digital cable then you might be fine for that emission. I measure my wattage using an swr meter. You should see if you can retract your bid because you paid almost double what I payed. just make sure you have an antenna tuned to your frequency. I use the jpole but thats just my preference. send me a message if you need any help.

[pauloz386]

I brought one, I wasn't necessarily expecting 7 watts, but I was at least expecting watts, I haven't turned mine on yet. So you reckon it only emits .2w?. Which ebay store did you buy it from? Cheers Paul

[pickford7812]

@pauloz386 I picked it up off of kitmanlaw2008

[pickford7812]

I ended up getting $25 back, figured i had just better take it before i got nothing

[Aviator14]

The reason why you only got .2 watts is because you blew the final output MOSFET. The same thing happened to me. If you do not connect this to a perfectly matched antenna the MOSFET will blow because this thing DOES NOT have SWR protection and the amplifier blows really easy. I replaced the final in mine and I get close to 10 watts into a 50 ohm dummy load. Did you try to test the power output into a dummy load instead of an antenna?

[BlGDOG18]

i got two of these myself! i had the so called 8w transmitter but this one is way better, it has a heat sink and the other doesn't so i like this one and the 15w one!

[pauloz386]

CZH-5C Oh, same here! I noticed the pcb has inscribed CZH-5C which would imply 5w, the genuine chip is rated at 6w. How do you know that the mosfet (RD06HVF1) is fake? The printing on the chip doesn't look that clear is that what your going by? The transmitter does have high and low outputs did yours toggle or was it stuck on low?