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Messages - Sparks

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Antennas / Re: Ground Tuning Unit.
« on: November 19, 2018, 11:32:46 AM »
If someone could turn it into a PDF and email it to me: (switch for I can only open it on my phone but not my Mac...

I just emailed you the requested PDF (12 pages), converted from DOCX to PDF, made by my MacBook Pro using Microsoft from Microsoft Office Home and Student 2016 for Mac suite.

Afterwards I discovered that a somewhat earlier version is available online at this URL:

That one is signed: "Alex, VK2HAS", while the one I converted ends with: "Alex, VK2HAS now changed to VK2PRC". However, they both begin thus: "Date: 06.02.2016 —  By: Alex Ball VK2HAS".

BTW, there are several more or less free online services to convert from DOC or DOCX to PDF, here are the five top hits in my Google search:

I have used the first one earlier, when in a hurry, and I just tried it with your DOCX. It worked fine, except it downloaded with about half the size of what my yielded. I guess this matters only if you need high quality printouts.

Also check this post:

Hello everyone, would you want to reivew our handheld radio? We need the influencers to review and make  videos for us on youtube!

If you have youtube and with more than 1,000 subscribers, and the important is your are a ham, you have the experiences on review amateur radios. please contact me by email:
We can talk about the details for review.

Also check this post:

This radio is a dual band Analog radio, it has a special function cross-band repeater.
Gil took a video to explain this function, and how to use this function, please check here:

If you want know more about this radio, please check here:

Morse Code / Morserino-32 — a new multifunctional Morse code machine
« on: October 29, 2018, 09:03:50 PM »
Morserino 32 is a new multifunctional Morse code machine specifically built for anyone wanting to learn Morse code or improve their Morse code skills. Watch the demonstration video below to learn more about the system which has launched by a Kickstarter and already raised its required goal with still 12 days remaining on its campaign.

The development team behind the Morserino 32 explain more about its creation and features.

“This kit will change how people learn and practice Morse code. Based on a previous device (the MetaMorserino) and on the experiences of CW Schule Graz, Morserino-32 features a number of functionalities that are, in its combination, unrivalled by any other morse code practice device on the market”

– CW Keyer
– Code Generator
– Echo Trainer (repeat what you hear)
– CW Decoder (from a straight key or from audio input)"
– CW Transceiver, using LoRa in the 70cm band“

It comes with capacitive touch paddles, so you can start learning and practicing without the need to buy an expensive mechanical paddle. But of course, once you have learned the basics and are on your way to the High Speed Club, you can of course connect your favorite mechanical paddle.”

Much more here:

Gil started a relevant thread a couple of years back:  [Ultra Portable Radio Design Challenge.]

Morse Code / Re: Can Morse Code Still Save You?
« on: September 04, 2018, 08:49:12 AM »
Radio Relay International  after action report on exercise contains useful information about QRP CW for emergency communication.

In that PDF I found this:

The RRI cycle of quarterly exercises is designed to test specific assets and methods in a sequence leading to more complex scenarios. This first quarter exercise was designed to test radiotelegraph circuits, whereas the second quarter exercise, for example, was designed to test two digital networks.

In the case of the first quarter exercise, it should be noted that radiotelegraphy (“CW”) is an extremely effective mode for portable, forward-deployed high frequency communications. It offers minimal DC power consumption, elegant equipment simplicity, light weight, few failure points and a capacity to clear a higher volume of message traffic than voice methods, often at a ratio of three to one in a given time- period. With the emphasis on battery power and renewable energy schemes, the use of CW circuits was the logical mode selection for this exercise.

Three frequencies were assigned for use in this scenario:

10115 kHz
14115 kHz

These are the default RRI watch frequencies (QSX) for the CW mode. In addition, they are specified priority circuits for use during a communications emergency.

Are these three frequencies agreed upon elsewhere than in a "Radio Relay International" context?

Morse Code / Re: Learn How To Increase Your Morse Code Copy Speed.
« on: August 28, 2018, 08:13:11 PM »
I downloaded the app "Morse Machine" by IU4APC …

Seems it is, alas, only available for Android devices. Even if an iOS version is promised in a reply to a 2015 comment.

Antennas / Re: Successful Wire Antennas.
« on: August 04, 2018, 10:19:01 AM »
Strange, there are 237 pages in that PDF but when I download it I can only look at 145 of them …

The PDF is actually only 32 pages long. It starts with the TOC and then moves to Chapter 3 Dipoles, at page 42. Then there are excerpts of other chapters, too. So the PDF is only a sample of the book.

Read more about the book in this review:

They link to the same sample PDF, except this one has copyright watermarks on every page:

I found the book on Amazon:

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