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, aa7hq
5615	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 > >