ATS-20+ with active antenna Problem

NRW

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Hello community!

A few weeks ago, I bought the neat little ATS-20+ to explore what's beyond the usual FM channels.

Well, it's been quite fun, i got several channels, the doomsday radio UVB-76 and similar:cool:. I did some reading, installed Goschante's firmware, and finally bought an active loop antenna since I live in an apartment building and can't install an external antenna; the included rod antenna isn't all that great.

HFDY 50K-500MHz Breitband-Aktiv-Loop-Magnetantenne LZ1AQ Verstärker HF AM FM VHF UHF SDR Empfänger Radio Tescun Malahitea

Couple of days ago I finally got around to testing it, and all the AM bands were just producing static :( I reconnected the telescopic antenna and couldn't find anything there either. The FM band works fine, though.

I think I have damaged the AM part with the active antenna :( The ATS-20+ has an AM/FM switch on the back, and it was set to AM.

I opened the radio casing and couldn't see anything burnt. A few years ago, I repaired electronics professionally and took a look at the AM part: BNC - AM/FM switch - C45 - SI4732 chip. I tested C45 with a component tester; I've attached a picture.

Even though I haven't worked with electronics for a while, it looks like capacitor C45 is defective. A typical capacitor picture is a clean oval.

Has anyone else had a similar problem? I think the ATS-20+ should be able to handle the active antenna; I actually did my research before buying :( Is there a schematic for the latest ATS-20+ model with the integrated Atmel processor? I've googled it and found nothing, only older models. :(
I'm thinking of replacing the capacitor; hopefully, that will help. But I don't even know its capacitance or if the chip behind it damaged aswell.
 

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