> I believe that the P3 is tapped prior to any BW restrictions,
Correct. I think the best way to measure an SSB signal's bandwidth on the P3 is to turn on peak hold. After a few seconds the spectrum display will show a pretty accurate picture of the spectral shape of the signal
Alan N1AL On 04/28/2014 07:08 AM, David Cole wrote:
Hi, All the ESSB talk got me wondering about how accurate the P3 might be for measuring bandwidth. Could someone review my method for this outlined below and comment please: 1. Use ATT if needed to avoid very strong signals 2. Set bandwidth to 4 KHz. See note below. 3. Adjust Span on P3 5 KHz per side 4. Shaded area above waterfall indicates K3 bandwidth Watch P3. Can one trust the waterfall display to show actual bandwidth? If so, how accurate would it be? Note: I believe that the P3 is tapped prior to any BW restrictions, (of merit to this exercise), so I understand that step 2 is just for my ears only, and does not affect BW display on the P3. Is that a correct assumption?
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