rfdave

9 ms·

31.
by rfdave 6y ago
WTOP, which is the All News/Traffic station is filled with ads from contractors during the Drive time. Of course, I last listened to them a year ago, but I suspect that hasn't changed. Listen to them anytime between 7am and 9am ES
32.
by rfdave 6y ago
Or a Greek Diner in New Jersey?
33.
by rfdave 6y ago
Sounds like a fun filled hobby. How many people are interested in actually spending 30 to 40 hours spooling up to understand what they're getting, and 5 to 10 hours a month tracking it? I'm sure there's a population, but I&#x
34.
by rfdave 6y ago
That's awesome. Now I have to buy all new appliances, with poorly implemented WiFi stacks, trash all my older, fully functional appliances (Oh, how environmentally friendly will that be?) to let my local power company save me $20/
35.
by rfdave 6y ago
"The Complete Venus Equilateral" will scratch that itch. https://www.amazon.com/Complete-Venus-Equilateral-George-Smi...
36.
by rfdave 6y ago
Somewhat related, http://server-sky.com/ proposes putting servers in orbit. Would make a nice adjutant to the mega constellation projects going on
37.
by rfdave 6y ago
It is, in fact, an emulator running the original microcode. Yes, Synthetic programming and all (Multiple Hundreds) of plug in modules are available, including new ones written today -see http://www.hp41.org/LibView.cfm?Comma
38.
by rfdave 7y ago
Are you familiar with www.hpmuseum.org? Collectors and users of HP calculators hang out there. Hp41.org is great for the HP41
39.
by rfdave 7y ago
Option 1 - Plant trees that have been growing for millennia, with skills that are wide spread across all of humanity Option 2 - Invent technology that is currently unknown, scale it to a world wide scale, facing unknown challenges and probl
40.
by rfdave 7y ago
Nice. Which protocol are you using? How is equipment availability?
41.
by rfdave 7y ago
And for some reason the fact that the mice that were subjected to the cell phone signals lived longer is ignored by everyone.
42.
by rfdave 7y ago
You're trying for a huge breadth of material, stuff that is covered in multiple specialities in electrical engineering. Multivariable calculus is really the entry point for engineering level antenna design. Balanis is the book I used i
43.
by rfdave 7y ago
They've also picked up the Ex-Motorola RFIC team in Phoenix. Integrating those two teams 9 time zones away I'm sure went poorly. I worked with both of those teams, and they're both sharp. I'm sure the integration was tou
44.
by rfdave 8y ago
That paper is out on the internet. I found a copy here https://s3.amazonaws.com/s3.documentcloud.org/documents/6974... it's a good read on outsourcing, profits and management.
45.
by rfdave 8y ago
You also want to be able to version data sheets to see where errata creeps in.
46.
by rfdave 8y ago
The significant spike at DC is an inherent issue with Direct conversion receivers, driven by circuit level DC offsets and IP2 contributions. Offset tuning works, but you're stuck with sucky image rejection (30 to 40 dB at best)
47.
by rfdave 8y ago
I also volunteered in my area to work the polls. Very rewarding work watching democracy take place. Please consider volunteering for the 2020 elections!
48.
by rfdave 8y ago
Not really. You'd be surprised how easy a LEO link budget is, the free space path loss isn't much more than a cell phone link.
49.
by rfdave 8y ago
I'm an experienced HW guy pondering this, My wife and I have kids out of college, so I'd be coming at this from the other end of the family pipeline.
50.
by rfdave 8y ago
Electronic Warfare is the general term for that. The Association of Old Crows https://www.crows.org/ is the relevant professional society, along with IEEE
51.
by rfdave 9y ago
Link to CELab post on Mil Std 810 - Gunfire shock. https://celab.com/en/laboratory/environmental-tests/mil-std-... The application portion has a nice explanation on the effects of gun fire on systems. Keep in
52.
by rfdave 9y ago
Switch mode power supplies are small, but the batteries to power them are not. NSA certified crypto modules aren't in an ARM chip the size of your thumbnail.
53.
by rfdave 10y ago
holding a pencil in one hand that has a tip at 650F isn't completely safe either.
54.
by rfdave 10y ago
Looks sketchy in what way?
55.
by rfdave 10y ago
The digital hardware to handle the output of a 4 GSPS ADC is beefy as hell. This part has integrated DDC's if you're happy with downsampling, but if you want full nyquist data coming out of this, you need to handle 6 Gbyte/Se
56.
by rfdave 11y ago
But there are many situations what you get yourself into that seem like a good idea at the time. It's impossible to make predictions about future events. The IBM employees getting laid off here are not responsible for the corporate dec
57.
by rfdave 11y ago
When you move into a New (New Lease/New Construction) building for the organization. Two for Two so far in my career.
58.
by rfdave 11y ago
Earlier in my career, I have been asked to design circuits in interviews. Phone screens have also included in depth discussions of component tradeoffs for various circuits. My most recent interview, after 20+ years of experience, wasn&#x27
59.
by rfdave 11y ago
Yeah, but if your factory is down a flight of stairs, and you have daily face to face meetings with your Manufacturing engineers, who get involved with the product at the first meeting, it's a whole lot easier.
60.
by rfdave 11y ago
Certainly start with an Arduino if you want to turn it into a commercial product. If you can't get it to work with an Arduino, then a Beaglebone is probably the next step up. Stay away from Raspberry Pi, as getting the Broadcom SOC is

More ›