Re: RA8875 display problems with T4.x - a visual study
¿ªÔÆÌåÓýI said it¡¯s BELOW -100 db.? After that I start measuring the noise from the fluorescent lights in the room and my wife won¡¯t let me turn them off (her glass lab is in there too).? I do have a combo anechoic/ Faraday box in corner in my lab but it¡¯s in the process of getting moved to a different corner due to new flooring and paint. ? I¡¯ll get some absolute numbers once I get some of these human things settled. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C 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@... ? ? From: [email protected] <[email protected]> On Behalf Of Greg KF5N via groups.io
Sent: Monday, April 7, 2025 9:15 AM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] RA8875 display problems with T4.x - a visual study ? So I think what you are saying is a standard receiver sensitivity measurement which the ARRL calls "MDS" (minimum discernible signal). Receiver sensitivity is specified in dBm, which is decibels relative to 1 milliwatt (0 dBm). ? But even if I'm not confused on that, I'm still confused with the numbers, especially 100 dB for V12, which is presumably (what I think you mean) a sensitivity of -100dBm. Which is not very good at all! ? -- 73 Greg KF5N |
K9HZ