Comments by "Paul Sengupta" (@paulsengupta971) on "How To Tune In To Any Aircraft!" video.

  1. QNH is the pressure at the airport, but adjusted to give the pressure at sea level, i.e. when set will give you your altitude above sea level. The QFE is the pressure adjusted for airfield elevation, so when set will give you the height above the runway.
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  2. They don't usually allow you to use radio receivers on aeroplanes due to the local oscillator potentially causing interference. If you ever fly on United Airlines, they pipe the radio through onto the in flight entertainment system channel 9 (IIRC).
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  3. ​ @fireflyrobert  Yes, I remember. Which leads on to the joke. ATC to US aircraft: Descend 3000ft, QNH 1014. US aircraft: Say, could I have that in inches? ATC: Descend 36,000 inches, QNH 1014.
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  4. It's become very confusing in Europe. 128.050 and 128.055 are the same frequency, but if you type in 128.050 on an aircraft radio it'll tune to 128.050 and switch in the 25kHz filter. If you select 128.055, it'll tune into 128.050 and switch in the 8.33kHz filter. The next frequency step will be 128.060 which will be an actual frequency of 128.05833kHz with the 8.33 filter. The next one up will be 128.065 which will be an actual frequency of 128.0667kHz with the 8.33 filter. Confused yet? The next one will be 128.075 or 128.080 which is the same frequency (128.075) but the first has the 25kHz filter, the second the 8.33kHz filter.
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  5. They don't mind unless you're uploading it to the internet in real time, then they'll ask you to stop apparently, and is why there's no UK feeds on LiveATC.
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  6.  @KingGiac  QFE is also used by GA pilots doing circuits.
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  7. Yep, I've got an MVT-7100 which I still use. (does SSB as well). But at home my FT-991 also receives airband as does my FTM-10. And since my aeroplane radio is old and crap and doesn't do 8.33kHz spacing, I use a handheld transceiver in the aeroplane (FTA-550).
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  8. "Top Mud" (it's what they call themselves, in relation to Top Gun - there's a sign up, or there used to be) Been there, watched them fighting fires. Can you still get the B52 hot dog in the cafe?
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  9. It used to be millibars. Any pressure of four digits, i.e. 1000 or above can be given as just the number. A number of 999 or below has to have "hectopascals" added on.
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  10. CAP 413 Section 3.4 3.4 For all transmissions, the word ‘hectopascal’ shall be appended to figures when transmitting a pressure setting below 1000 hPa, or in cases where confusion or ambiguity may result.
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  11.  @fireflyrobert  The RPS, Regional Pressure Setting, isn't called a QNH. It's just a Regional Pressure Setting. There's also QNE.
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  12.  @sUASNews  NH - Newlyn Harbour - where sea level is measured. FE - Field Elevation. They say they don't actually mean that, but they fit.
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  13. A friend of mine has stood on top of one of them, posting the picture of him standing on Mars...
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  14.  @RingwayManchester  You can make your own receiver easily out of a Raspberry Pi Zero 2W and an SDR dongle. I have two (one at each QTH) feeding FlightRadar24, but they can be programmed to send the data to other networks as well. I also have a PilotAware station which also does Radar360 uploads. As a bonus, if you upload data to FR24, they give you a Business subscription.
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  15.  @RingwayManchester  You can easily set one up using a Raspberry Pi Zero 2W and an SDR dongle.
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  16.  @csparty11  I live about 30 miles from Heathrow and an antenna in the attic picks it up ok. It is rather flat in between though.
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  17.  @Bootradr  We use the channel numbers as given above, so it stays as a three digit decimal. The aircraft radio translates!
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