Comments

Author Comment Last activity Moderation
Ag8n "Of you are using windows, start with SDR#. It's freeware. Start by listening to air traffic control in the local area. The new versions of SDR# ..." | Read more » 12 months ago
Ag8n "The emission bands would be best seen at night. And they are flame condition dependent. So you would want to monitor the flame some way. The bes..." | Read more » 12 months ago
Ag8n "It depends on the type of instrument. A narrower slot is normally used in a scanning type instrument. Many instruments these days are not scanning..." | Read more » 12 months ago
Ag8n "Most of what's been shown on TV has been satellite photos and local photos. For example, many photos were taken of China, as compared to a year pr..." | Read more » 12 months ago
Ag8n "Sorry, that should be UAT, not UAB. Look up UAT. " | Read more » 12 months ago
Ag8n "Ok. There are two easy aircraft tracking systems, ADSB and UAB. ADSB is commonly used on aircraft flying above 10,000 ft. UAB is more often used..." | Read more » 12 months ago
Ag8n "This conversation may get a little write-up FYI. The shimmering air is probably caused by refraction. The heated air has a different RI then cold..." | Read more » 12 months ago
Ag8n "I'm not an expert on the EPA. But I do have extensive experience in the medical device field. In the USP ( United States pharmacopeia), timelines ..." | Read more » 12 months ago
Ag8n "Purple air would be the best group to answer this question. If the data exists, it would help the sales of the purple air instruments. A quick lo..." | Read more » about 1 year ago
Ag8n "73 DE mark " | Read more » about 1 year ago
Ag8n "Hi! Yes, SDR# is also my favorite software. I also have a V3, but I also have several of the older dongles. The older ones work ok, you just have ..." | Read more » about 1 year ago
Ag8n "I can only make a guess as to why they start at 0.2 ppm. With most analytical measurements, you want a ten to one signal to noise ratio to be sure..." | Read more » about 1 year ago
Ag8n "One inexpensive way to do that is with an rtlsdr dongle. You might want to check the rtlsdr subreddit. The dongles cost about $20. Thats assuming..." | Read more » about 1 year ago
Ag8n "An impressive step forward. I couldn't tell, from the visual, if the instrument used FTIR transmittance or FTIR reflectance. Could you please cla..." | Read more » about 1 year ago
Ag8n "The TCD is a thermal conductivity detector. It's an attempt at a " universal" detector- that is one that will detect most substances. The problem..." | Read more » about 1 year ago
Ag8n "Ok, it's a question of the process and how much you know about it. If you know everything that's likely to be produced in a plant ( say a refining..." | Read more » about 1 year ago
Ag8n "VOC just tells you the amount of volatile organic carbon, not the specific molecule. If the voc is all octane, that's a totally different situatio..." | Read more » about 1 year ago
Ag8n "We had a gas sampling valve on our gc/ms. This could be used for gas analysis, but was usually used for heart cutting samples from a hplc to the g..." | Read more » about 1 year ago
Ag8n "Safety first. The problems you describe could be caused by a furnace not working correctly and generating carbon monoxide. Please get a carbon mo..." | Read more » about 1 year ago
Ag8n "Ok. If you are using the public labs spectrometer, it can be calibrated using the mercury lines in a compact florescent lamp (CFL). You could the..." | Read more » about 1 year ago
Ag8n "By the way, the CyAN app gets images from satellites! " | Read more » over 1 year ago
Ag8n "There is an APP from the EPA that allows for testing for cyanobacteria ( yes,this includes the bad algae). The app works on androids and is called..." | Read more » over 1 year ago
Ag8n "It's not as easy to do as it seems. Sunscreen blocks light in the uva and uvb . These are in the range of 360 nm to 200 nm. If you want to use t..." | Read more » over 1 year ago
Ag8n "There are a number of ways to test for this. But first, don't Use any method that brings you in contact with the algae. The exception is, if you a..." | Read more » over 1 year ago