Alex KR1ST on Nostr: Santa brought me Quansheng UV-5k(8). A YTer in a recent video said he couldn't ...
Santa brought me Quansheng UV-5k(8). A YTer in a recent video said he couldn't recommend this HT because it was "dirty" and showed a screenshot of TinySA Ultra from which the viewer was to infer that the radio was not satisfying FCC requirements.
The FCC requires harmonics to be 40dB down from the fundamental and the video showed that the second harmonic was "only" 38.8dB down. I'm including a screenshot of that video.
Time to do some measurements!
#hamradio #amateurradio
1/4
Published at
2023-12-26 19:34:20Event JSON
{
"id": "95944f6f0cff58002c02777b183d911186c6004c8b96320b1c6defbada1a274e",
"pubkey": "752b611ba7d1769b10d1a1dbde86fe5b5e7d761738a841f75f57f221c91ae321",
"created_at": 1703619260,
"kind": 1,
"tags": [
[
"t",
"amateurradio"
],
[
"t",
"hamradio"
],
[
"proxy",
"https://mastodon.radio/users/kr1st/statuses/111648391874105626",
"activitypub"
]
],
"content": "Santa brought me Quansheng UV-5k(8). A YTer in a recent video said he couldn't recommend this HT because it was \"dirty\" and showed a screenshot of TinySA Ultra from which the viewer was to infer that the radio was not satisfying FCC requirements.\n\nThe FCC requires harmonics to be 40dB down from the fundamental and the video showed that the second harmonic was \"only\" 38.8dB down. I'm including a screenshot of that video.\n\nTime to do some measurements! \n\n#hamradio #amateurradio\n\n1/4\n\nhttps://mastodon.radio/system/media_attachments/files/111/648/385/753/183/348/original/5dd34249dd6dcb57.jpg",
"sig": "fd85a4734d91de27af578d8ada8d27dd8f52cb30b3f89efaeceaa0c9bef34e845844d99a1d8449bfb5c01c344d67f539a59cf9e85bfbd5f095a2e6df855eb9ec"
}
