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ZachTek

30 orders since Aug 04, 2017

5 Reviews

Nyhamnsläge, Skåne, Sweden

Ships from Sweden.

Custom Work Available

WSPR Desktop transmitter

WSPR Desktop transmitter

ZachTek

Retired!
GPS Referenced RF generator 1Hz to 10MHz

GPS Referenced RF generator 1Hz to 10MHz

ZachTek

Retired!
Low Pass filter components.

Low Pass filter components.

ZachTek

Retired!
WSPR_TX_LP1 Transmitter

WSPR_TX_LP1 Transmitter

ZachTek

Retired!
Customizable Keyboard UNO shield

Customizable Keyboard UNO shield

ZachTek

Retired!
12 Digit LED Display

12 Digit LED Display

ZachTek

Retired!
Big Rotary Encoder / VFO wheel

Big Rotary Encoder / VFO wheel

ZachTek

Retired!
Big 12 Digit LED Display

Big 12 Digit LED Display

ZachTek

Retired!
Customizable Keyboard shield with long stroke keys

Customizable Keyboard shield with long stroke keys

ZachTek

Retired!
10MHz Frequency Reference OCXO-T

10MHz Frequency Reference OCXO-T

ZachTek

Retired!
34MHz to 4.4GHz Frequency Synthesizer

34MHz to 4.4GHz Frequency Synthesizer

ZachTek

Retired!
10MHz Frequency Reference OCXO-R

10MHz Frequency Reference OCXO-R

ZachTek

Retired!

About

I'm a electronics technician with hardware design as my speciality and software as a side line.
My interests and expertise are wide ranging but RF and Radio technology excites me the most.

I started doing electronic design in my own company when I was fresh out of school but after a few years I
became an IT Manager and have been working in the Computer industry for 30+ years at large International Software companies.

So now I'm finally going back to my roots by designing hardware for myself and for the public.
I take on custom jobs if I can fit them in.

My products are aimed to people that want to have an electronics piece to fit in to their project without to much hassle.
I try therefore to have my products pre-programmed and ready to use.
They are for the most part open in hardware and software so you can change them and tweak them.

I hope you will find something of interest among my products and that they will serve you well.

Harry @ ZachTek

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Rates to

Reviews

Review Breakdown

5
4 4
1 3
0 2
0 1
0

Average Ratings

Product: (5.00)

Documentation: (4.80)

Shipping: (5.00)

Communication: (5.00)

Jeff | July 6, 2018

Does what it says

For GPS Referenced RF generator 1Hz to 10MHz

GPS is an amazing technology and this board lets you harness it to have a very accurate clock (frequency reference) in your own house.

I liked this device in particular because simply by recompiling the firmware I could select the exact RF frequency in Hz. So I've used it as a frequency reference for a 1960s frequency meter (1MHz), a 1970s quartz watch tester (4.32MHz), and even to create a test signal for said watch tester (1Hz, 5Hz, 360Hz). It is very satisfying to re-tune these old devices' OCXOs.

The author has been responsive to my questions, including when I had some early trouble due to my choice of USB-Serial dongle. Beware that the power requirements of this board are too great to be met by certain "3.3V" USB-Serial adapters, which may not be able to supply a full 70mA of current to the device. When this happens, it appears that the microcontroller repeatedly enters "brown out" mode and not work properly or reprogram from within the Arduino environment. If the green "GPS Power" LED blinks this may be happening to you. In my case, a "5V" USB-serial adapter worked great. (contrary to what another reviewer stated, a USB-serial adapter was not included in my order. The adapters I tried are FTDI-based adapters sold by SparkFun probably 5-8 years ago)

Catalin | March 11, 2018

Excellent overall service and product, highly recommended

For 10MHz Frequency Reference OCXO-R

Fast shipment, outstanding support. High quality product, well designed and manufactured. Good versatility, easily integrated in larger projects.
Very good price-quality trade-off (so far the most affordable high-stability frequency reference available to my knowledge).

Farkas | March 6, 2018

very nice, demanding product! Very good quality!

For 10MHz Frequency Reference OCXO-T

The seller is a nice extraordinary exquisite helpful, very ordinary, I only recommend!
buy it bravely, it's worth it!
♥ valued customer ♥.•:*¨¨*:•.♥thank you ♥.•:*¨5 STAR¨*:•

Catalin | March 1, 2018

Excellent overall service

For GPS Referenced RF generator 1Hz to 10MHz

The products arrived fast and well packaged. Functionality is consistent with description. Support is really outstanding - customizing the code and a free USB interface were included in the package. Documentation and schematics updated and well organized. Highly recommended maker!

James | Dec. 20, 2017

Great addition to my workbench.

For 34MHz to 4.4GHz Frequency Synthesizer

The ARB on my bench can only output 5 MHz (20 MHz sine waves.) So I needed something that could provide a higher frequency output. My current scope is limited to a couple hundred megahertz. The signal quality at 100MHz is on-part with my expectations and works for my use. I really like the Serial interface. It simplifies the control. I'm interested in I2C for automation, but for now, simple ASCII commands works for me.

Great job on the board, thanks!
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