Hi Chris I am using the YH77STA phones. They are the best phones I have ever used. I have had them for about ten years.
There is absolutely no hiss or any residual noise with my K3 AF gain at minimum or any audio hiss at any setting. It suggests that you have an AF amplifier fault. Incidentally my FT1000MK5 and my TS2000 are also totally hiss free. However my IC7000 has considerable hiss as does the FT2000. I don't know about the big Icoms or their new 7600 and would be interested to hear from anybody who has one. 73 Barry VK2BJ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of OE5CSP-Chris Sent: 5 May 2009 14:33 To: [email protected] Subject: Re: [Elecraft] BHI HP-200 and other headphones Hi Chris, The K3 headphone amp (National LM4811) is specified at 106dB S/N ratio so should be pretty noiseless. Using Sennheiser HD600's here with quite high sensitivity which has no noticable noise on the K3. Does the hiss remain with AF gain all the way down? A quick & dirty way to lower the residual amp noise is a small resistor network is series with the headphone output. Not so elegant but might save you from buying yet another headphone... 73' Paul PD0PSB Hi Paul, The hiss remains even with the AF gain all the way down! The front panel connector is worse than the rear connector, so I always connect the Yaesu FH 77 STA to the rear connector. Could you please tell me how to build the series resistor network? 73, Chris-OE5CSP -- View this message in context: http://n2.nabble.com/BHI-HP-200--and-other-headphones-tp2792291p2796364.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
