Yes, *raise* the trigger threshold. tnx Mike / W5JR Alpharetta GA
> On Oct 14, 2015, at 5:44 AM, Barry N1EU <[email protected]> wrote: > > It might be a matter of terminology, but the technique actually involves > RAISING the AGC Threshold so that gain compression only kicks in on the > strongest signals and there's a linear gain curve for everything below that > level. From s1 to s9 is a delta of ~48dB, so a full implementation of > K3NA's advice (with HIGH headphone isolation) would involve a threshold set > above s9. > > 73, Barry N1EU > >> On Tue, Oct 13, 2015 at 8:18 PM, W5JR Mike <[email protected]> wrote: >> >> That's exactly how I set mine up. Lower the AGC-T to where the band noise >> and weak/moderately weak signals aren't hitting the threshold. So maybe >> S4-5+ signals do hit the threshold. I'm able to still hear the "at noise >> floor" signals without pain in the ears from strong signals. They're loud, >> but manageable. >> >> tnx >> Mike / W5JR >> Alpharetta GA >> >>>> On Oct 13, 2015, at 6:25 PM, Stephen Hicks, N5AC <[email protected]> >>> wrote: >>> >>>> On Tue, Oct 13, 2015 at 3:56 PM, Barry N1EU <[email protected]> >> wrote: >>>> >>>> But my main >>>> point here is that a high end xcvr vendor should hopefully not hamstring >>>> the receiver AGC with a lower dynamic range and prevent such techniques. >>>> >>>> Thanks for listening & 73, >>>> Barry N1EU >>> >>> You can certainly adjust the levels to whatever suits you -- I threw >> 40dB >>> out as a typical number. For more dynamic range, you can lower the AGC >>> threshold. You can, of course, turn it off and have the full dynamic >>> range, but I don't know of anyone that would find this comfortable. >>> >>> 73, >>> Steve >>> >>> >>> Stephen Hicks, N5AC >>> VP Engineering >>> FlexRadio Systems™ >>> 4616 W Howard Ln Ste 1-150 >>> Austin, TX 78728 >>> Phone: 512-535-4713 x205 >>> Email: [email protected] >>> Web: www.flexradio.com >>> Click Here for PGP Public Key >>> <https://sites.google.com/a/flex-radio.com/pgp-public-keys/n5ac> >>> >>> >>> >>> *Tune In Excitement™* >>> PowerSDR™ is a trademark of FlexRadio Systems >>> _________________ >>> Topband Reflector Archives - http://www.contesting.com/_topband > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband
