I don't know anything about the 870, but most other modern rigs really seem to fall down in the audio department.
The ratings typically are 2.5 watts or less at 10% distortion, no frequency response range or noise figures... But even using the line out into a hifi amp and good speaker does not improve things much, as a lot of noise and distortion is in earlier stages. Add in the off frequency overload and you have a really poor sounding radio. You can get an audio chip that puts out 20 watts times 2 and runs off 12 volts, with close to true hifi specs for about $3.00 (car radio amps). I just cant understand how they can make boxes that cost $5000.00 and up with every feature you can think of and put in a 1.5 watt 10% distortion amp and a 2 inch no fi speaker! Brett N2DTS > > TS870 has best RX audio I ever heard. This is often neglected area > in RX design, but stays in line from antenna to our brains. > My experience of many RX building is to keep amplifier naturally > linear without almost any feedback. Pass-band may be 20Hz....30kHz. > > I hope K3 has the same quality in audio part. > > TS870 can be modified with Inrad filters, but the real problem is > still broad up-conversion band. Even the canadian gain-modification > is just a partial help. To replace 0603 and 0805 SMD > resistors was just > on the limit for my eyes. > > TS870 has a genuine RF-clipper with real monitoring. > > But K3 seems to have these and much more. I wait for mine > and look forward for manual published here. > > Benny OH9NB > > > _______________________________________________ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
