EMRFD Message Archive 5610
Message Date From Subject 5610 2010-12-30 15:43:47 aa7hq i read that am radios are mostly junk do they not work?
are they poorly designed to meet a need or fill a gap?
should we auction off their spectrum?
is their use (in new or old ways)very deplorable?
maybe i am too old and crotchety to understand the new
meanings of many old words.
regards, ed, aa7hq5615 2010-12-30 18:14:01 ae5ew Re: i read that am radios are mostly junk Then you surely remember the days when the Japanese decided that putting extra transistors into radios was a good marketing strategy. Wow! That 10 transistor radio MUST be good. Dangit, wait. 4 of them don't do anything so is it really better than a 6 transistor radio? Thank goodness those days of electronic marvels are gone. They are gone? Right?
Charles AE5EW
5617 2010-12-31 06:19:44 hanssummers2000 Re: i read that am radios are mostly junk Hi
I have a bad habit of picking up any discarded old CRT TV I find in the neighbourhood, taking it home and dismantling it. I'm 39 now and must've been dismantling things for a good 25-30 years by now, can't seem to kick the habit.
Back 25-30 years ago, the discarded TV's were valve (tube) based. A typical UK 625-line colour TV had not much more than 10 valves (tubes) in it.
What entertains me endlessly, is the amount of components you find in a more "modern" discarded (solid state) TV. A huge number more than you found in an old valve (tube) TV. Usually many IC's, tons of transistors, you name it. Hilarious. I always wonder how they managed to make it work so well with 10 valves!
73 Hans G0UPL
http://www.hanssummers.com
5618 2010-12-31 07:25:31 ehydra Re: i read that am radios are mostly junk No Hans!
Look for example in one of the actual BEKO designs designed in turkey,
labelled as GRUNDIG.
They are low-cost designs and if you look at the main pcb (There is only
one pcb altogether and a couple of small adapter pcb for the in/out
sockets), there is not much left in view of part count. Also the design
is fitted more to the actual EMC directives, e.g. a very cheap simple
mains filter. and so on.
The whole TV is not very more than:
- plastic package
- tube
- main pcb, with one big custom ASIC. Power and high-voltage parts left
external to the ASIC.
- IR remote control
- Henry
--
ehydra.dyndns.info
hanssummers2000 schrieb:
> Hi
>
> I have a bad habit of picking up any discarded old CRT TV I find in the neighbourhood, taking it home and dismantling it. I'm 39 now and must've been dismantling things for a good 25-30 years by now, can't seem to kick the habit.
>
> Back 25-30 years ago, the discarded TV's were valve (tube) based. A typical UK 625-line colour TV had not much more than 10 valves (tubes) in it.
>
> What entertains me endlessly, is the amount of components you find in a more "modern" discarded (solid state) TV. A huge number more than you found in an old valve (tube) TV. Usually many IC's, tons of transistors, you name it. Hilarious. I always wonder how they managed to make it work so well with 10 valves!
>
> 73 Hans G0UPL
> http://www.hanssummers.com
>
>