Dave Cawley
@dave-cawley.bsky.social
Grew up in Devon & Cornwall in the 60's. Was a Senior RF Design Engineer at Philips in the 80's. Fixated with measurement, this is just one bench. de G4IUG Joined BlueSky 2024
I live in Dartmouth South West England
Also see https://www.qrz.com/db/g4iug
I live in Dartmouth South West England
Also see https://www.qrz.com/db/g4iug
Been there, done that ! You have mail on X
May 19, 2025 at 7:24 AM
Been there, done that ! You have mail on X
@coastal8049.bsky.social
What freqancy and or width will you be looking at ?
What freqancy and or width will you be looking at ?
May 14, 2025 at 7:46 AM
@coastal8049.bsky.social
What freqancy and or width will you be looking at ?
What freqancy and or width will you be looking at ?
What freqancy and or width will you be looking at ?
May 13, 2025 at 9:54 PM
What freqancy and or width will you be looking at ?
How slow is the drift ?
March 24, 2025 at 8:32 AM
How slow is the drift ?
Well this is a great shame and a learning opportunity. Here we noticed the contrast between IM-2 and BGM-1 where one was tall and skinny and the other low and dumpy. Also BG had woks for feet and the landing video showed the efficacy of the shock absorbers.
The transmitters & antennas were great !
The transmitters & antennas were great !
March 7, 2025 at 8:52 AM
Well this is a great shame and a learning opportunity. Here we noticed the contrast between IM-2 and BGM-1 where one was tall and skinny and the other low and dumpy. Also BG had woks for feet and the landing video showed the efficacy of the shock absorbers.
The transmitters & antennas were great !
The transmitters & antennas were great !
@coastal8049.bsky.social How long until you get a good view of it Scott ?
March 6, 2025 at 7:00 PM
@coastal8049.bsky.social How long until you get a good view of it Scott ?
I looked wen you posted but just nothing. It's behind some houses now so that's all until tomorrow.
February 28, 2025 at 4:39 PM
I looked wen you posted but just nothing. It's behind some houses now so that's all until tomorrow.
I got Blue Ghost at 1.2 degrees this morning, so same here !
February 28, 2025 at 2:17 PM
I got Blue Ghost at 1.2 degrees this morning, so same here !
@eelkevisser.bsky.social @coastal8049.bsky.social
Perfect sight from here now, but nothing received at all ?
Are you getting anything ? 14:50 UTC
Perfect sight from here now, but nothing received at all ?
Are you getting anything ? 14:50 UTC
February 28, 2025 at 1:49 PM
@eelkevisser.bsky.social @coastal8049.bsky.social
Perfect sight from here now, but nothing received at all ?
Are you getting anything ? 14:50 UTC
Perfect sight from here now, but nothing received at all ?
Are you getting anything ? 14:50 UTC
@coastal8049.bsky.social I'm glad to see they are using the IM-1 frequency.
How can I track this ? (or know where it is ?)
How can I track this ? (or know where it is ?)
February 28, 2025 at 9:12 AM
@coastal8049.bsky.social I'm glad to see they are using the IM-1 frequency.
How can I track this ? (or know where it is ?)
How can I track this ? (or know where it is ?)
Agreed, and Scott is getting it there too. As you said, it's getting busy up there !
February 27, 2025 at 10:36 PM
Agreed, and Scott is getting it there too. As you said, it's getting busy up there !
@amsat-dl.org What freqancy is IM-2 on please ?
February 27, 2025 at 7:51 PM
@amsat-dl.org What freqancy is IM-2 on please ?
Well, that's a great deal !
February 26, 2025 at 10:30 PM
Well, that's a great deal !
"sync it to the HP Z3801a " now that would be cool.
I can see a very long loop filter and the need for a virtually noise-less control system, but well worth doing indeed !
I can see a very long loop filter and the need for a virtually noise-less control system, but well worth doing indeed !
February 26, 2025 at 11:17 AM
"sync it to the HP Z3801a " now that would be cool.
I can see a very long loop filter and the need for a virtually noise-less control system, but well worth doing indeed !
I can see a very long loop filter and the need for a virtually noise-less control system, but well worth doing indeed !
I like that ! Bristol University is only 2 hours away. A motor and flywheel, Arduino and a handful of components, I'm almost tempted to make one.
February 26, 2025 at 10:07 AM
I like that ! Bristol University is only 2 hours away. A motor and flywheel, Arduino and a handful of components, I'm almost tempted to make one.
Yes indeed, I looked at your link
"Reaction wheels are used primarily by spacecraft for three-axis attitude control, and do not require rockets or external applicators of torque, which reduces the mass fraction needed for fuel."
I never knew that, thanks.
"Reaction wheels are used primarily by spacecraft for three-axis attitude control, and do not require rockets or external applicators of torque, which reduces the mass fraction needed for fuel."
I never knew that, thanks.
February 26, 2025 at 10:00 AM
Yes indeed, I looked at your link
"Reaction wheels are used primarily by spacecraft for three-axis attitude control, and do not require rockets or external applicators of torque, which reduces the mass fraction needed for fuel."
I never knew that, thanks.
"Reaction wheels are used primarily by spacecraft for three-axis attitude control, and do not require rockets or external applicators of torque, which reduces the mass fraction needed for fuel."
I never knew that, thanks.
That would make sense, although I’m not sure I understand how they actually do that.
Thanks, Dave
Thanks, Dave
February 25, 2025 at 8:37 PM
That would make sense, although I’m not sure I understand how they actually do that.
Thanks, Dave
Thanks, Dave
@firefly-aerospace.bsky.social
I noticed on the recent video that the Spacecraft always appears to be facing the Sun ? Is this normal or an optical illusion
I noticed on the recent video that the Spacecraft always appears to be facing the Sun ? Is this normal or an optical illusion
February 25, 2025 at 8:28 AM
@firefly-aerospace.bsky.social
I noticed on the recent video that the Spacecraft always appears to be facing the Sun ? Is this normal or an optical illusion
I noticed on the recent video that the Spacecraft always appears to be facing the Sun ? Is this normal or an optical illusion
7:40 UTC this morning 7 degrees elevation 12.5dB C/N with my known sub-optimal 92cm linear system on the final 100km orbit before descent.
@coastal8049.bsky.social
I noticed on the recent video that the Spacecraft always appears to be facing the Sun ? Is this normal or an optical illusion ?
@coastal8049.bsky.social
I noticed on the recent video that the Spacecraft always appears to be facing the Sun ? Is this normal or an optical illusion ?
February 25, 2025 at 8:12 AM
7:40 UTC this morning 7 degrees elevation 12.5dB C/N with my known sub-optimal 92cm linear system on the final 100km orbit before descent.
@coastal8049.bsky.social
I noticed on the recent video that the Spacecraft always appears to be facing the Sun ? Is this normal or an optical illusion ?
@coastal8049.bsky.social
I noticed on the recent video that the Spacecraft always appears to be facing the Sun ? Is this normal or an optical illusion ?
@amsat-dl.org
I noticed on recent video that the Spacecraft always appears to be facing the Sun ? Is this normal or an optical illusion
I noticed on recent video that the Spacecraft always appears to be facing the Sun ? Is this normal or an optical illusion
February 25, 2025 at 8:09 AM
@amsat-dl.org
I noticed on recent video that the Spacecraft always appears to be facing the Sun ? Is this normal or an optical illusion
I noticed on recent video that the Spacecraft always appears to be facing the Sun ? Is this normal or an optical illusion
Much better this morning !
February 24, 2025 at 8:20 AM
Much better this morning !