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Noise Floor

[email protected] All Messages By This Member #33483 Hey 'yall, I'm still working off a 2' wip in the basement, so not the best environment.? Lots of noise on 20M but still picking up 4's and 5's !!!? Anyhow, I may misunderstand what the book (3rd ed) is saying but when I adjust the noise floor, the spectrum goes UP and the waterfall colors get more out of wack (my opinion).? I mod'ed the code to allow the Noise Floor to go negative and it does what I was hoping/expecting/understanding. Is there something here I don't understand?? Do I misunderstand what the book is saying? I'm running the latest 66.9, v12.? I'm still working my noise problems. Thanks Mark KU3O NoiseFloor_0.jpg NoiseFloor_-45.jpg NoiseFloor_30.jpg
jerry-KF6VB All Messages By This Member #33484 Generally when my spectrum is all yellow & angry, I crank in some receive attenuation. - Jerry, KF6VB toggle quoted message Show quoted text On 2025-04-12 11:11, epif18 via groups.io wrote: Hey 'yall, I'm still working off a 2' wip in the basement, so not the best environment. Lots of noise on 20M but still picking up 4's and 5's !!! Anyhow, I may misunderstand what the book (3rd ed) is saying but when I adjust the noise floor, the spectrum goes UP and the waterfall colors get more out of wack (my opinion). I mod'ed the code to allow the Noise Floor to go negative and it does what I was hoping/expecting/understanding. Is there something here I don't understand? Do I misunderstand what the book is saying? I'm running the latest 66.9, v12. I'm still working my noise problems. Thanks Mark KU3O Links: ------ [1] /g/SoftwareControlledHamRadio/message/33483 [2] /mt/112231162/243852 [3] /g/SoftwareControlledHamRadio/post [4] /g/SoftwareControlledHamRadio/editsub/243852 [5] /g/SoftwareControlledHamRadio/leave/10484476/243852/1943518115/xyzzy
Terrance Robertson, KN6ZDE All Messages By This Member #33485 What you've done is fine.? Some of us have coded an auto noise floor adjustment for the v11.? I suppose it will get to the v12 software at some point.
jjpurdum Member Profile All Messages By This Member #33486 I changed the check for negative values some time ago...not sure why it was changed back. I prefer to have the noise floor sitting just a smidge above the horizontal axis. I'll look into this. Jack, W8TEE On Saturday, April 12, 2025 at 02:11:26 PM EDT, epif18 via groups.io <epif18@...> wrote: Hey 'yall, I'm still working off a 2' wip in the basement, so not the best environment.? Lots of noise on 20M but still picking up 4's and 5's !!!? Anyhow, I may misunderstand what the book (3rd ed) is saying but when I adjust the noise floor, the spectrum goes UP and the waterfall colors get more out of wack (my opinion).? I mod'ed the code to allow the Noise Floor to go negative and it does what I was hoping/expecting/understanding. Is there something here I don't understand?? Do I misunderstand what the book is saying? I'm running the latest 66.9, v12.? I'm still working my noise problems. Thanks Mark KU3O -- Jack, W8TEE
[email protected] All Messages By This Member #33489 Thanks Jack.? I commented out the "floor=0;" line 430 in ButtonProc.cpp in case anyone wants to tinker.? Works great !? I like the results with the noise floor just above the horizontal axis.? Ver066-9 that I downloaded on 4/3. Mark KU3O
K9HZ All Messages By This Member #33490 开云体育 My wish is that eventually its related to something… ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? toggle quoted message Show quoted text From: [email protected] <[email protected]> On Behalf Of epif18 via groups.io Sent: Saturday, April 12, 2025 6:34 PM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] Noise Floor ? Thanks Jack.? I commented out the "floor=0;" line 430 in ButtonProc.cpp in case anyone wants to tinker.? Works great !? I like the results with the noise floor just above the horizontal axis.? Ver066-9 that I downloaded on 4/3. Mark KU3O

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