I'm not a ham guy and don't have much experience in communications. But i want to ask 1) you said if I'm locky i could catch ISS and talk to it. Does duppler effect change the frequencies weather it's coming towards me or away? 2) your last drawing showed your repeater's with rx and tx. Don't you need a mixer as well? 3) the notch filter should filter out tx+rx and tx-rx frequencies. I guess these frequencies are so extreme that we assume they are outside of notch filters working frequencies and they would be filter out.
Cool video and well explained. And I am starting to see that all these terminologies depend on who you're talking to (no pun intended). Radio operators like things in Watts for the power and Hz for the frequency and Meters for the band. Engineers like things in dBm and Hz. Physicists like things in Watts and Hz and nanometers for light. Or something like that :-)
Hello, think you mean GMRS General mobile radio service. NOTE: I got a SSA3021X Plus and now its a SVA1032X Spectrum Analyzer/ VNA 3.2GHz all the goodies enabled, and then discover YOU don't! I was so looking forward to you using and explaining it, but that's never going to happen. I just have to piece together your spectrum and much better VNV videos. Please keep them coming. My ham radio will be here soon. THANK YOU!
I believe it transmits at 475 what it receives at 470 and transmits at 470 what it receives at 475. This would be a duplex down-conversion, amplify, and up-conversion. Person A is at 470 MHz for receive and transmit and Person B is at 475. This is straightforward and compatible with standard gear.
How could low-power GSM repeater negatively affect Base Station? Maybe you could make a video on that? I got notice from gov inpector (with spectrogram attached) advising to uninstall this repeater due to this reasoning. Could share the details of installation and their measurement graph (which btw looks probably ok to me withing frequency bands) if interested as video material.
Christopher Jackson - Lol yup. A dog tranceiver could be a backup system for tracking Imsai Dog with thermal paw-prints as in a recent video on the InfiRay P2 IR camera, at around 12:05. Use the paw prints to track him in the house, and the tranceiver if he escapes from the house and runs off down the road into the neighbourhood. Cheers :-)
I like when you talk ham radio, that really interests me. Thank you for this great video.
+1 for Review and teardown!!!! Must find the IMSAI DOG!!
Nice. Waiting for a teardown of that one - and the duplexer looks nice to me, with these rigid coax lines. Always cool to learn HF tech.
I'm not a ham guy and don't have much experience in communications. But i want to ask
1) you said if I'm locky i could catch ISS and talk to it. Does duppler effect change the frequencies weather it's coming towards me or away?
2) your last drawing showed your repeater's with rx and tx. Don't you need a mixer as well?
3) the notch filter should filter out tx+rx and tx-rx frequencies. I guess these frequencies are so extreme that we assume they are outside of notch filters working frequencies and they would be filter out.
1. both
2. no
3. notch filter kills one frequency but all others are passed
Cool video and well explained. And I am starting to see that all these terminologies depend on who you're talking to (no pun intended). Radio operators like things in Watts for the power and Hz for the frequency and Meters for the band. Engineers like things in dBm and Hz. Physicists like things in Watts and Hz and nanometers for light. Or something like that :-)
Hello, think you mean GMRS General mobile radio service. NOTE: I got a SSA3021X Plus and now its a SVA1032X Spectrum Analyzer/ VNA 3.2GHz all the goodies enabled, and then discover YOU don't! I was so looking forward to you using and explaining it, but that's never going to happen. I just have to piece together your spectrum and much better VNV videos. Please keep them coming. My ham radio will be here soon. THANK YOU!
I believe it transmits at 475 what it receives at 470 and transmits at 470 what it receives at 475. This would be a duplex down-conversion, amplify, and up-conversion. Person A is at 470 MHz for receive and transmit and Person B is at 475. This is straightforward and compatible with standard gear.
hopefully in tomorrows video I get that right
@@IMSAIGuy Verify first. This might especially be wrong regarding the ISS signals.
@@byronwatkins2565ISS: ruclips.net/video/O4XG_zIeA3A/видео.html
How could low-power GSM repeater negatively affect Base Station?
Maybe you could make a video on that?
I got notice from gov inpector (with spectrogram attached) advising to uninstall this repeater due to this reasoning.
Could share the details of installation and their measurement graph (which btw looks probably ok to me withing frequency bands) if interested as video material.
That's so cool !
What if u put a transceiver on imsai dog directly and used a network of repeaters to triangulate his position..... ❤
Christopher Jackson - Lol yup. A dog tranceiver could be a backup system for tracking Imsai Dog with thermal paw-prints as in a recent video on the InfiRay P2 IR camera, at around 12:05. Use the paw prints to track him in the house, and the tranceiver if he escapes from the house and runs off down the road into the neighbourhood. Cheers :-)
@@robinbrowne5419 engineers gonna engineer 😂 we can't help ourselves 😊
@@christopherjackson2157 Yup. I really enjoy watching Imsai Guy because I usually learn something. Cheers from Canada :-)
No need to explain repeaters...your thumbnail says it all.
looks like two guys listening to the local FM station on their transistor radios.
You can get a job drawing for @XKCD!
🌷🌟🌷