Pete's New Transceiver with Heathkit Filter and WSPR (Video)

Another beautiful rig from Pete. Inspiration for the winter building season.  More info on his blog:

http://n6qw.blogspot.com/

We hope to discuss this and other projects in the next SolderSmoke podcast, hopefully next Saturday. 

M0HYT's Through-Hole (No Surface Mount) uBITX

That's the spirit! I like how Peter M0HYT took the uBITX schematic and built his own, his way.  When you build the rig yourself, if problems arise (spurs, harmonics getting past filters) you are in a much better position to fix the problem. I'm afraid that sometimes those buying an already-assembled board just feel aggrieved if the purchased item is not fully within specs.     

M0HYT posted this to the BITX20 group (this past summer): 

I have just built a uBITX with standard components (no SMD's) from scratch on a PCB I designed - it works well.  I have now designed another PCB which incorporates the Arduino NANO and the the Si5351 shield and I'm just waiting for the PCB's to arrive and then I will start assembling.  I made some changes to the circuit to allow for a dynamic microphone and the use of screened TOKO cols for the 30MHz lowpass filter, I also changed the coupling arrangement to the 45MHz filter.

I have attached a picture of the original PCB and a PDF of the new layout incorporating the Arduino and Si5351

Maybe one day I will play with SMT but for now standard components are still easily available !
 
73's - Peter M0HYT

Chinese AMATEUR Satellites ORBITING THE MOON! Radio Amateurs Receiving Images

This is really amazing and deserves more attention than it has been getting.  

http://www.spaceflightinsider.com/organizations/china-national-space-administration/contact-lost-with-chinas-dslwp-a1-lunar-microsatellite/

https://amsat-uk.org/tag/dslwp/

https://gbtimes.com/radio-enthusiasts-receive-new-earth-and-moon-images-from-chinese-microsatellite-in-lunar-orbit?fbclid=IwAR2eUGeyyDK7FgalitW5xQxY7TEekbTxRSwg17uwWrEdzBduGQdfARqHfFo

https://twitter.com/bg2_cry

https://twitter.com/bg2bhc

https://space.skyrocket.de/doc_sdat/dslwp-a.htm

https://destevez.net/2018/06/dslwp-b-detected-with-7-element-yagi/

Falcon 9 Launch, Landing and Sat Deployment Video

Very cool video from Space X.  I like how they have the time-line along the bottom and the telemetry in the upper right.  This is the first time they brought a first stage back to Vandenberg AFB.  I hope we get to watch the launch of the Indian Cube-Sat in November. 

VU3XVR's EMRFD TIA HB TRANSCEIVER

Ram did a beautiful job on this 40 meter rig.    You can read about this project here: 

https://vu3xvr.blogspot.com/2018/10/homebrew-5-watts-cw-transceiver-using.html

Stockpiling Parts for Analog Oscillator STABILITY

Doug DeMaw taught us that a key contributor to analog oscillator stability is the use of NP0 capacitors.  As part of my effort to maintain the ability to produce analog, discrete component, coal-and-cap, chip-free oscillators, I recently went out onto the internet in search of an assortment of NP0 capacitors.  Nightfire Electronics had just what I needed.  I took their assortment and put it in a parts box for easy access.  

http://vakits.com/about-nightfire-electronics

Radio Astronomy Knack!

This video has so much of the kind of stuff that interests us:  roadkill antennas.  3D printers.  Arduinos.  Raspberry Pi, And of course, RADIO ASTRONOMY.   

And the Thought Emporium guys have a lot of other great project videos on their YouTube site:

https://www.youtube.com/channel/UCV5vCi3jPJdURZwAOO_FNfQ

I feel myself being pulled back into SPACE.  First there was Farhan's new satellite, now this.  Last weekend I finished a 3 element quad for 146 MHz.   In a fit of nostalgia I used the same copper tube elements that I used to communicate with the MIR space station from the Dominican Republic in 1995. They have good JuJu.  And Mojo.   TRGHS.  More on this later. Tune UP!  

Back to Mr. Carlson's Lab

I like the Vedolyzer in the wooden box. 

The Triple Scratch-Built BITX Club -- Do you qualify for membership?

OK, so how many of you guys can join Steve M0KOV and me in the Triple Scratch-Built BITX Club?  

Bill 

Below are my three Bitx builds.

1st build.  

Closely follows Farhan's original 20m design but I soon changed the VFO for an arduino/ad9850.  It was a fast, get me on the air build, it worked, but not well.

The output amp was built on a separate board as part of its exorcism. 

2nd build. 

This was to be my two band Hill Topper, we don't have mountains in Yorkshire. Built with separate stages slotting into the eddystone box to save space and to help with shielding. The receiver worked very nicely, the output kept blowing irf510's. I later found that they were a hopeless batch. Very hard to work on.

3rd build. Big is beautiful. Arduino/si5351 straight into the modulator and into the mini-circuit mixer through a driver as discussed. Norton feedback RF preamp and a ne5532/lm386 AF amp. At the moment it's on 80m but it did start on 40m. It's still a work in progress and I will have to sort that soldering iron band change.

73  Steve M0KOV

Freethink YouTube Channel

Lots of really nice, inspirational videos here: 

https://www.youtube.com/channel/UConJDkGk921yT9hISzFqpzw

Farhan's Satellite

Latest news:

The launch is set for November 24, 2018 from California.  It will be in a polar orbit.  The beacon will be on 145.90 MHz.   Farhan says an RTL-SDR Dongle should do the trick.  I plan on building several receive systems and an appropriate antenna. 

https://telanganatoday.com/a-blessing-for-the-small-guys

https://www.thehindu.com/news/national/other-states/odisha-man-team-builds-private-satellite/article24963338.ece

https://www.timesnownews.com/technology-science/article/instagram-now-lets-you-shop-directly-from-stories-explore-tab-heres-how/286276

I don't think Farhan's group is connected to this group, but this short video does a nice job of explaining the potential of CubeSats.

FROM Prasad VU3YFD:

Hi my friend's information to all about a man's " A DREAM COME'S TRUE " in " VU " LAND with his hard work & to the whole team.. we can say ......FANTASTIC ..... no other words to express from my side but i ENVY on their hard work's.. hi hi .de vu3yfd,prasad

AMSAT-UK

IARU Amateur Satellite Frequency Coordination

List of Sats formally submitted

ExseedSat Updated: 10 Aug 2018 Responsible
Operator Ashar Farhan VU2ESE
Supporting Organisation Exseed Space Innovations Pvt Ltd
Contact Person afarhan@gmail.com.nospam
Headline Details: The ExseedSat is a 1U cubesat that will provide a multifunction UHF/VHF NBFM amateur communication satellite. It will have various configurable modes, including: • UHF to VHF, single channel, narrow band FM transponder with CTCSS, 67 Hz squelch • Power output selectable between 1 watt and 0.5 watt • Digipeat feature with APRS on UHF uplink nd VHF downlink • Melody mode : It will play a simple melody of a few notes on special occasions or events. This will interest students outreach. • We expect this satellite to have a life of two years, depending upon how long the battery lasts and when the satellite de-orbits naturally. Planning a SpaceX launch from Vandenberg in October 2018 **The request has now been updated to include only a U/V transponder/digipeater** **The following frequencies have been coordinated: 145.900 MHz for repeater and digipeater downlink and for telemetry and 435.340 MHz for repeater and digipeater uplink**
Application Date: 19 Jul 2018 Freq coordination completed on 10 Aug 2018

Read The Hindu story at https://www.thehindu.com/…/odisha-man-t…/article24963338.ece

IARU information http://www.amsatuk.me.uk/iaru/formal_detail.php…

Gurudatta Panda VU3GDP http://gurudattabam.blogspot.com/

Ashhar Farhan VU2ESE http://hfsignals.blogspot.com/

Tnx cu agn de vu3yfd,prasad

Pete's New Sudden Transceiver

Check it out!  Note the Juli-yellow front panel color.   Featuring FT-8 and WSPR capability.  Go Pete! 

http://n6qw.blogspot.com/2018/09/2018-year-of-ssb-transceivers_14.html