Another question--can you check if the distortion is also on the Aux input as well? If it is not, that narrows down the problem quite a bit. Ron N6AHA _______________________________________________
Then the problem is probably isolated to the SSM2166 mic preamp chip in the A7 section (schematic 81917_9.pdf) or its associated components, U201AA or U200A (Main Codec, schematic 81917-6.pdf). The U
FT-240-43 works for most HF and VHF applications, for the lower end of HF and BCB use FT-240-77. Same size, different mix. They're not cheap ($9.00 each), but they cure heavy duty problems that nothi
Whoops....sent that last e-mail before I wrote a message! I talked to W6FE last night on 3.847 later on in the evening last night, and heard that distortion first hand. He blames it on his 'gravelly
Yes...in fact I joined that very QSO later in the evening after I ate dinner. We keep missing each other! If you're listening now, I'm on a bizarre QSO on 3815 with WG6K, AE6QV and some drunk who's h
Thank you for the kind comments on the audio. I should be on 40 meters this evening sometime after 0000 UTC, and possibly as late as 0400. Look around 7165 to 7195, and we can share some ideas! Ron N
You are most likely right about that. The DSP code can change the frequency response of the system, and my measurements show the low frequency response is off quite a bit from the published specs. I
I would like to hear what their diagnosis is. I'm convinced now that there is a problem that effects only some of the O2's...maybe a bad run of chips from a 3rd party supplier. My O2, which does not
Verrrrrry interesting about the RAM master reset!!! Ron N6AHA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/te
I forgot I had to go to a school open-house last night, and didn't get home until late, so by the time I got on 40, everyone was gone. The settings look interesting. I'll try doing frequency response
At the end of the day, it *is* a subjective test that determines which one is better, and even then, different conditions will yield different results. If possible, the test should be done in conditi
I just added a page to my Orion website about the O2 audio problem and NR controversy. Nothing that will shock folks who have been reading posts on this website, but a kind 'where we're at' update. O
To measure frequency response of a system, the gain must be held stable, otherwise, the ALC would make every tone fed into the mic connector show exactly the same output power. That's what it's suppo
I second that. Just tried and it works the way it's supposed to. Ron N6AHA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailma
Thanks! Ron N6AHA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
I appreciate the comments! Ron N6AHA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
It should be a fairly simple test, and it is on most equipment, but when I put in a steady tone, the output changes. Even when the power is set at 100%, but the output is down to around 5 Watts, it w
In listening to radios effected with the problem, outboard processing would have not changed the basic 'raspiness' we've been hearing, in fact it might make it sound subjectively worse. I don't have
I checked the frequency response using pink noise, and again the old-fashioned way with a sig gen, and found pretty much what I found before: - 1 dB @ 300 Hz -2 dB @ 200 Hz -4 dB @ 150 Hz -9 dB @ 100