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Re: Mystery of R-0 ZERO

 

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FIXED IT!

L1 100 uH was faulty.
Tested with my PEAK ATLAS40 LCR Meter. This piece is dead as dead can be.

I was lucky I just order some 100mH cokes for some other project.
Now the sensitivity of the RX is about 40uV.
I am using an ELECRAFT XG3 signal generator for signal tracing and testing.

The audio is still a bit quiet. But at least I can hear stations and my signal generator.
See what else can be done to get this Chinese wreck a bit better!

I am going to complain at the Chinese seller.

Good luck to you all.

72/3 de sTef

DM5TU / VY1QRP



72/3 de DMT5U
sTef

Am 03.11.2016 um 22:58 schrieb dm5tu@... [SoftwareControlledHamRadio] <SoftwareControlledHamRadio@...>:

?

Hi Bill,


I am having the same kind of 40 9er board infront of me. V2.1.

No RF Signal to be heard.

Replaced the R0 and jumpered from C8 to Pin3 of U3 and jumperd from L1 to U3 Pin 3.
No success.

Can you please give me your voltage readings from U3 of Pin 1 to 8.

Thanks and 72/3 de sTef
DM5TU / VY1QRP
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