going waaay off topic...
this is completely off topic. but being the radio fanatic i am vacuum tubes still produce alot better sound over SSD's until you get into digital shit.
dunno where your analog source is coming from cos even radio stations use mp3 (or a similar format) ... that leaves pre-digital-age LPs and 45s... (even vinyl comes from digital masters now)
theyre portability is weak due to the power requirements of the cathodes....
make great space heaters too... lol... (not kidding... a simple 4 tube audio amp can raise a room 10F in under two sides of a record
but hey who wants to carry around 50 pounds of tubes anyway.
you might be surprised at who is willing to do so.... when you see someone make a wheeled cart for their radio so they can move it around (this radio being designated the 'portable' one) it makes me wonder about their sanity....
and analog tuning + analog transmission still surpasses digital in trying conditions.
agreed.... but trying to make out which blob of snow is which character is also trying... as is listening to a radio station that fades in/out stereo/mono and loud bursts of fuzz....
emergency only in this situation(if you want to keep your sanity)... but NOAA still broadcasts analog and many weather radios still tune analog...
if you have the right set of varable capacitors in your tuning set up you can tune down to a tenth of a hz assuming your fingers dont twitch uncontrollably from drug abuse.
hmm... all i want is the thing to quit wandering on its own away from 95.3FM .... (i quit using that tuner a long time ago but still have it.... being AM/FM with lineout audio it was -full- of tubes... damn thing weighs a ton... runs hotter than many of the portable space heaters.. and -never- would stay on the station i wanted it to even tho it had 'automatic fine tuning' .... which did work... cos with that turned on it would 'jump' stations rather than drift through them)
and no i dont care to repair it cos i dont want to use it... already got a portable AM/FM/SW that uses 2 C batteries and has a digital tuner that works fine...(and if its a flaky tube i -really- dont want to repair it cos the price of some of the harder to find ones is insane)
btw, what i ment by "holding on to their tubes" was that the ham radio community doesnt seem to want to 'innovate' anymore... once they were the leaders of innovation... now... its just a nostalga club... http://www.hamradio-online.com/1999/mar/unique.html
(very good read but very old)http://weblog.fortnow.com/2006/04/ham-radios-coding-theory-and-internet.html
(this ones just funny)http://nonbovine-ruminations.blogspot.com/2009/01/future-of-amateur-radio.html
interesting to note in that last link a user named 'tim' uses the old standby "excuse" that ham radio is a 'service' ... gets used every time they feel threatened....
yeah... i used to go to hamfest... but got tired of the ideas that werent
being used and quit going alltogether when i asked if it would be possible to have 56k packet radio and got basically laughed out of the place... come to find out they -did- 56k packet radio (called GRPS) in the 80s.... guess they regressed?