Tv Broadcast signal`s

[rabbit73]

Via my mobiel i can acces this Site , if i want to do this with my pc i get the massage; forbidden !?

mvg

I had a similar problem. There were so many ads my Norton security software wouldn't even let me logon. Using a Private Window helped, but the best solution was to join as a Pub Member / Supporter.

 

[primestar31]

The site is having issues right now, and Scott hasn't yet been able to nail down exactly what's causing them.

 

[rabbit73]

The SDRPlay series of SDRs have a unique feature not usually found in other SDRs. In addition to the usual relative dBm scale, it also has a calibrated dBm scale that can be used for absolute signal measurement when properly setup.

View: https://www.youtube.com/watch?v=MRR-x_TjOp4


johan:
Closed captions can be auto-translated to Dutch as shown in previous posts.

Here are some measurements of a Channel 2 ATSC 1.0 signal from a Thor modulator. They display as 31 dB SNR on the SONY TV, 89% Signal Quality on the Mediasonic HW250STB, and 4.4 dBmV on my Sadelco DisplayMax 800 Signal Level Meter.

2025-2-6 RSP1B SNR 31dB Measurements:

This was a closed system; no antenna
RSP1B center channel calibrated measurement: -60.1 dBm
Modulator > Variable attenuator > amp 17 dB > 4-way splitter for:
1. RSP1B
2. SONY TV: 31 dB SNR
3. Mediasonic 250STB: 89 percent Signal Quality
4. Signal Level Meter: 4.4 dBmV

For comparison:
Using the RSP1B calibrated measurement:
-60.1 dBm + 15dB BWCF = -45.1 dBm
-45.1 dBm + 49 = 3.9 dBmV very close!

BWCF is Bandwidth Correction Factor