018 QO-100 Some problems to solve And a gift from my wife (Part 5)
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- Опубликовано: 29 сен 2024
- Cross-posted video from my main channel (Because it is HAM related)
In this video series, we are building a ground station for a geostationary satellite and trying to talk to a guy in Antarctica. It is a bonus series and not directly related to the regular topics of the channel.
The last two weeks were rainy and wet here in Switzerland. I have the antenna outside, and I did not want to go there with my delicate equipment. That is why I still was not able to transmit a signal and receive my voice from space. But I was not lazy!
And I got a gift from my wife...
Newest product links in this video: • 020 QO-100 Update: Fri...
Links (also from other QO-100 videos:
QO-100: Playlist: • HAM Radio
POTY instruction: • Montage antenne POTY p...
POTY antenna: www.passion-ra...
Adalm Pluto SDR Receiver: amzn.to/3fSQPxk
PLL LNBs: www.passion-ra...
Green LNB (good for external clock modification): ebay.to/2WV3reR
Pre-amplifier: s.click.aliexp...
20W amplifier: s.click.aliexp...
8W amplifier: s.click.aliexp... or amzn.to/2SKoBLv
Power Meter: s.click.aliexp... or amzn.to/35FNdtV
SMA torque wrench: s.click.aliexp... or amzn.to/2zeEG5b
50W Attenuator (not tested): s.click.aliexp...
GPSDO Leo Bodnar: www.leobodnar.c...
Filter design: rf-tools.com/l...
Adalm Pluto Hack: tbspace.de/plu...
LNB Hack: ea3cno.wordpre...
K3NG Keyer: github.com/k3n...
Begali keys (Say hello to Bruna from me): www.i2rtf.com/... with black finish and optional blue paddles
The links above usually are affiliate links that support the channel (no additional cost for you).
Github: www.github.com...
My Patreon Page: / andreasspiess
If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission (of your purchases in the next 24 hours)
My Amazon.com shop: www.amazon.com...
For Banggood bit.ly/2jAQEf4
For AliExpress: bit.ly/2B0yTLL For Amazon.de: amzn.to/2r0ZCYI
For Amazon UK: amzn.to/2mxBaJf For ebay.com: ebay.to/2DuYXBp
/ spiessa As an Amazon Associate, I earn from qualifying purchases
Hi, the guy with the swiss attenuation curve...
Just a small remark on your choice of filter type....
- Butterworth has the less ripple in the pass band, but also the less attenuation slope at a given order
- Tchebychev on the other hand had much more ripple but a steeper attenuation profile
As your goal was to filter a single stable frequency, Tchebychev might have been a better choice...
Anyway, though wireless is not much of my taste, I do appreciate much both your channels - both I learn quite a bit, and I remember my early analog past (I'm retiring...)
Very best wishes
Jean
You are right with the filters. I assume here it was not too important because the harmonics to filter start with 2x the frequency.
It is a pitty that you do not like wireless. It has so many opportunities!
I'm trying to get into morse code but am lacking the confidence to get on the air with it, I would love to build the k3ng keyer. Perhaps you will make a video on that project?
The k3ng is a simple project. I made one without all the "bells and whistles" in a small case.
I propose to use a Morse decoder in parallel when you try your first QSOs. Like hat you have a backup and gain confidence.
That's a nice keyer. 73s w7ht
Indeed! Real mechanics.
Cross-posting is fine! I did not watch this the first time round but I am glad I chose to watch it today. If anyone else is thinking about buying the GPSDO in this video, it is worth emailing them with the frequencies you want from it. They can advise on whether your frequencies will be too close to some of the internal part frequencies (like the PLL) and may increase phase noise. For a small fee (and I do mean small) and a few extra days, they will select replacement parts and install them if they can find alternatives which suit your output frequency requirements better. I was pleased to use this service but have yet to deeply use the device.
Thanks for the filter and to other commenters about the filter - I was wondering if I was operating too close to my scope's BW limits to have a good measurement of the waveform but you have confirmed what I observed. I will definitely condition it now.
I assume I will attract also other subscribers over time which are not subscribed to my main channel…
Thank you for the info about the frequency service.
Many thanks Andreas for the filtering explanations. I was struggling with this since a while.
Glad it was helpful!
I had never heard of the E-series of preferred numbers before. I guess I should have suspected something like that given the consistency of the component values, but I never thought too deeply about it before. I love your channel because you are always opening my eyes to new things! Thank you!
You are welcome! I always try to add some "spice" to the ordinary menu ;-)
The RF-Tools filter design page is one of the most useful pages on the web.
And that's a beautiful keyer; congratulations on 200K!
I like this page, too because it is easy to use. And I like the keyer, too
So one lever of the morse key does dot and the other does dash ?
Yes... But they are referred to as dits and dahs.
@@russcarter9983 thanks 👍
The keyer itself only has two switches. You need electronics to create the dahs and dits ( somtetimes included in the transceivers)
Yes it is called an iambic key
I am really enjoying this particular series. That filter design link and the E12 lesson is now book marked! Thanks.
Glad that the content was useful!
yay love the keyer ... Morse paddle too
It is really a nice piece of craftmanship!
Bing is my best friend. :)
Here it is Google. I have ver particular questions...
Impressive setup for an amazing project !
Thank you. Indeed it is amazing what we can do as individuals.
@@HB9BLA Indeed ! When I look back to the late 70-ties/early 80-ties... even a simple PCB was complicated. I spent many hours messing with Ferric Chloride to the overwhelming joy of my mother and later my wife... Everthing is so much easier now ! What an exciting times !
Nice
Thank you!
These are all repeats aren’t they ?
I crossposted the HAM related videos of my primary channel. The thumbnail of the new ones looks different (as well as the intro)
@@HB9BLA you could just include a playlist of your radio related videos from main channel on the main page of this one without the need to re-upload.
:-)
:-)
HB9CH Bern 73
73 de HB9BLA
keyer or key?
Usually, simple keys are called "Straight keys" and the ones with paddles "keyers"
@@HB9BLA I hate to disagree here, but in English the paddles are paddles and a key is a key. The keyer is a piece of electronics (or mechanics in the case of the mechanical keyers like the vibroflex etc) that sends a stream of dits and dahs to a rig when old rigs only had provision for a straight key. Modern rigs have the "keyer" built in. In this case the box of electronics from K3NG is in fact the keyer. There is a bit of confusion because of fully automatic desktop paddles for ships and amateurs had the keyer inside them. Paddles such as the beautiful set you have from your wife are not referred to as keyers, but paddles or external paddles ("external" in reference to the once integrated keyer/paddle module).
Morning Andreas, have a nice day.
You too!