I got a boost of 15dB on my hearing aids and it works great with the rear K3 connector
John Hendricks K7JLT On Jan 3, 2014, at 10:52, Robert G Strickland <[email protected]> wrote: > Happy New Year, Don... > > Using audio out from the rear speaker jack is the same as the front headphone > jack: low audio which becomes distorted as the gain from either the radio or > the BT transmitter is increased. I'm thinking that this might be a limitation > in the hearing aids. I haven't checked with the hearing aid people about > increasing the gain of the hearing aids in the BT mode. That's worth a try. > I'll report back. > > ...robert > > On 1/3/2014 16:55, Don Wilhelm wrote: >> Robert, >> >> What happens if you plug the Bluetooth transmitter into the speaker jack >> on the rear panel? It is worth a try. >> >> 73, >> Don W3FPR >> >> On 1/3/2014 10:42 AM, Robert G Strickland wrote: >>> Thanks for the comments. >>> >>> Using the LINE OUT at a fixed level - whatever that might be - does >>> not allow volume control from the front panel AF/RF knobs. With this >>> setup the only volume control is on the blue tooth transmitter which >>> does not allow fine and immediate control as the operating environment >>> changes. >>> >>> With LINE OUT set to PHONES, the output level is controlled from the >>> front panel which is desirable. However, as stated in my original >>> post, there is no AF/RF setting that delivers enough <signal> volume, >>> regardless of the volume setting on the blue tooth transmitter. >>> However, while the signal level is way down, the radio control beeps >>> are at their normal volume suggesting that some adjustment/switch is >>> incorrect. What might this adjustment/switch be? >>> >>> The other issue is that sound out of the front panel audio jack, while >>> loud and controllable, is very distorted as heard via the blue tooth >>> transmitter. This may be because of an impedance mismatch; I don't >>> know right off what the input impedance of the blue tooth unit is. >>> Another reason may be a very limited dynamic range in the blue tooth >>> unit. >>> >>> The blue tooth transmitter does work as advertised when used as >>> intended: enhancing speech levels in a natural environment. This agan >>> suggests that impedance matching and/or dynamic range may be the >>> issue(s), at least when using the K3's front panel audio jack. >>> >>> ...robert >>> >> >> ______________________________________________________________ >> 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 >> > > -- > Robert G Strickland, PhD ABPH - KE2WY > [email protected] > Syracuse, New York, USA > ______________________________________________________________ > 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
