7 Transistor AM Radio Kit
Anyone try building one of those $8 China AM radio kits?
I ended up purchasing one off fleabay, it was eight dollars including shipping from China! The instructions were in Chinese, I had to figure out the symbols for the color coded IF transformers.. But that was easy enough, as they had them listed for the resistor color code. Once assembled, it worked great and was a lot of fun to build.. The last one I built was in 1974.. It was an Archer Kit from Radio Shack, and it cost $10 then! Basically, this is the same thing as the 70's Japanese kit. Only, it runs off 3v instead of 9. |
eBay link?
|
|
|
Thanks man, I ordered one... looks like a fun little project.
|
Neato !
Here is an AM/FM one, but it uses IC chips.... http://www.ebay.com/itm/New-AM-FM-AM...p/310930976499 . |
Back in 08' (I was still in high-school then) my college had me make a kit radio as part of a summer 'enrollment enticement' course. It was an AM-FM transistor affair with no case.
|
When I took electronics in 1970 they had us build a small AA5 tube radio from a kit. It was point to point wired and we had to completely assembly it with no solder and to get a passing grade it had to work. The idea was to teach good mechanical connections.
After that was done we soldered them up and the instruction then inspected our soldering job. Gregb |
Quote:
|
I built the AM-FM one with the surface mount chip.. Not a great performer, but fun to build anyway.
|
Yeah I was tempted by FM but thought a superheterodyne would be more fun. This will be a good radio to throw into my travel bag, I always like checking out what's going on, on foreign airwaves.
|
Quote:
If you want a good radio for air travel, and foreign lands look for a good AM-FM-LW-SW portable...Something Like a Sony (some will also tune the Japanese FM band), Grunding, Sangune (spelling), etc. The better SW portables tend to be real good on AM, and some countries have extra bands, or different frequencies for their bands so the more versatile the radio the more you can hear. |
Quote:
I suppose if you look at the data sheet, it does work by the same principal as a conventional superhetrodyne, i.e. Rf --> IF --> Detector --> Audio, but it's a super crappy radio on a chip integrated circuit with poor online reviews performance wise, minimal external components, and very little user adjustment/optimization I picked the AM set because the conventional discrete superhet design looks a little more likely to perform well than the crappy all in one IC solution. Plus building it take longer and be a little more fun. Quote:
|
Quote:
It had a cabinet that was identical to a early 50's Tele-Tone 4 tube radio. It was a common 5 tube superhet with an isolated B-, as it didn't come with a back. This weekend, I bought two transistor radio kits. One is a Kelvin AC operated, seven transistor. The chassis looks similar to the tube job, but it's stamped for transistor sockets and small IF transformers. According to the instructions, it's built in several stages and tested before going on. The transformer power supply, first. The second one is an Elenco, PC board job. Battery operated. :thmbsp: |
I really don't remember a brand, the case was a brown plastic.
Gregb |
All times are GMT -5. The time now is 12:49 AM. |
Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
©Copyright 2012 VideoKarma.org, All rights reserved.