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Jolly 7 · 27th Dec 2018, 8:34 pm

Extremely happy to report that my HX108-2 is finally up and running. The problem was the yellow output transformer and it happened to be only one of two components I didn't meter before soldering. When I desoldered and measured it, the secondary coil read 6 megaohms !!

Luckily I had a spare kit and used the output transformer from there. The correct reading for the secondary of the output transformer should only be 2 ohms.

Here is the final transistor lineup:
V1: 9018G
V2: 2N3904
V3: 2N3904
V4: 2N3904
V5: 2SC945
V6: 2SC945
V7: 2SC945

I used better quality electrolytic and ceramic capacitors but did not change any values.
A big thank you to everyone who helped me with this project, which I was almost going to bin. I will attempt to align it at a later time as I can hear many stations without.

27th Dec 2018, 8:34 pm	#66
Jolly 7 Octode Join Date: Feb 2018 Location: Southampton, Hampshire, UK. Posts: 1,061	Re: More Chinese AM radio kits Extremely happy to report that my HX108-2 is finally up and running. The problem was the yellow output transformer and it happened to be only one of two components I didn't meter before soldering. When I desoldered and measured it, the secondary coil read 6 megaohms !! Luckily I had a spare kit and used the output transformer from there. The correct reading for the secondary of the output transformer should only be 2 ohms. Here is the final transistor lineup: V1: 9018G V2: 2N3904 V3: 2N3904 V4: 2N3904 V5: 2SC945 V6: 2SC945 V7: 2SC945 I used better quality electrolytic and ceramic capacitors but did not change any values. A big thank you to everyone who helped me with this project, which I was almost going to bin. I will attempt to align it at a later time as I can hear many stations without.