Category: Ham Radio DX

Can you reuse and recycle 18650 LiPo batteries for other projects and make a battery pack for 12 volts? Yes!

At a regular DATV experimenters night, Justin VK7TW took the audience through an update on his 18650 recycling project with a 12.6V battery pack. Justin covered the battery differences with 3.7V versus 4.2V batteries, the difference in balance charger boards, the Battery Matrix and construction method and the schematic of the battery configuration.

18650 balance charger boards on eBay:
https://ebay.to/34mkaNh

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#LiPo #hamharder #18650

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This presentation explaining the basics of End Fed Half Wave (EFHW) antennas was done at the DATV experimenters night hosted by Justin VK7TW and Hayden VK7HH. Topics covered were the basics of EFHW antennas by Steve Yates AA5TB including lengths, design and installation of the antenna. Voltage and current distribution and the issues this presents, the minimum counterpoise, impedances and turns ratios of end fed impedance transformers.

Hayden VK7HH then took the audience through a great presentation on his experiments with his EFHW. Hayden covered the modification based on the VK4YE design, the testing, and the additional 80m loading coil, the coax counterpoise, and the common mode toroids. This allows a antenna for smaller spaces.

⏱️TIMESTAMPS⏱️

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#EFHW #EndFedHalfWaveAntenna #hamharder

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Does the Icom IC-705 drift in frequency? The results may surprise you! In this video I put that to the test with my IC-705 using WSPR. The radio was set to transmit 5W and received by my GPS locked IC-9700 at my remote station.

Icom IC-705, IC-7300 and IC-9700 Waterfall Setup for Weak Signals

Should You Buy an Icom IC-705?

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#Icom #hamharder #IC705

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The WSPR Desktop transmitter is a standalone multi-band WSPR transmitter with built in GPS for the radio amateur/experimenter available from Zacktek.

https://www.zachtek.com/product-page/wspr-desktop-transmitter

Some quick features:

1. Standalone operation, PC required for configuration but not for operation.

2. For transmission on a variety of HF Bands (2-5), based on model and user-choice.

3. Is powered from USB.

4. Comes with built-in GPS module and includes external GPS antenna with long cable for easy installation.

5. Use the PC configuration software to set up your call-sign and band-choice and after that it can operate in standalone mode.

6. Timing and Maidenhead position is automatic from the GPS network.
Take it camping, move it to another QTH, use it mobile.
Needs only 5V 250mA so can be powered from a phone charger or USB power pack.

7. Contains an Arduino with open source software.
Software and Schematic is published on documentation page.

8. Available in three models.
Model Low for bands 2190m and 630m
(136kHz and 474kHz)

Model MidPlus for bands 160m, 80m, 40m, 30m, and 20m
(1.8MHz, 3.5MHz, 7MHz, 10MHz and 14MHz)

Model HighPlus for bands 17m,15m, 12m, 10m and 6m
(18MHz, 21MHz, 24MHz, 28MHz and 50MHz)

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#HamRadio #WSPR #Zacktek

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Come join in the fun! Amateur radio, also known as ham radio is the world’s most diverse and fun hobby.

There are many facets of amateur ham radio which attract all with a wide range of interests. Many amateurs begin with a fascination of radio communication and then combine other personal interests to make pursuit of the hobby rewarding. Some focus on areas such as radio contesting, radio propagation study, public service communication, technical experimentation, and computer networking.

If you have a love for electronics, computers, radio or even the outdoors, ham radio has something for everybody. To get started have a look at these links:

Amateur Radio (Ham Radio) as Fast As Possible

Amateur Radio on Wikipedia
https://en.wikipedia.org/wiki/Amateur_radio

ARRL (United States) – Get Involved
http://www.arrl.org/get-involved

WIA (Australia) – What is Amateur Radio?
https://www.wia.org.au/discover/introduction/about/

RSGB (UK): FAQ

Amateur radio FAQ

Radio Amateurs of Canada: Getting Started
https://www.rac.ca/how-to-begin/

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#HamRadio #AmateurRadio #Hobby

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Come join in the fun! Amateur radio, also known as ham radio is the world’s most diverse and fun hobby.

There are many facets of amateur ham radio which attract all with a wide range of interests. Many amateurs begin with a fascination of radio communication and then combine other personal interests to make pursuit of the hobby rewarding. Some focus on areas such as radio contesting, radio propagation study, public service communication, technical experimentation, and computer networking.

If you have a love for electronics, computers, radio or even the outdoors, ham radio has something for everybody. To get started have a look at these links:

Amateur Radio (Ham Radio) as Fast As Possible

Amateur Radio on Wikipedia
https://en.wikipedia.org/wiki/Amateur_radio

ARRL (United States) – Get Involved
http://www.arrl.org/get-involved

WIA (Australia) – What is Amateur Radio?
https://www.wia.org.au/discover/introduction/about/

RSGB (UK): FAQ

Amateur radio FAQ

Radio Amateurs of Canada: Getting Started
https://www.rac.ca/how-to-begin/

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#shorts

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Australia to the United States on HF, can we do it? Join myself and Steve KM9G (Temporarily Offline) as we try to make contact on the 20 meter (14 MHz) ham radio band. The time will be early morning in Australia (around dawn) and mid afternoon in the United States.

Maybe you’ll even hear us on air?

Steve’s YouTube channel
https://www.youtube.com/temporarilyoffline

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#HamRadio #KM9G #HFContact

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In this video, I show the waterfall display options I use on the Icom IC-705 to find weak signal stations. This not only works for the IC-705 but also the IC-7300 and IC-9700.

What settings do you use? Please let me know in the comments below.

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#Icom #IC705 #HamRadio

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A quick #shorts video on my new end fed half wave antenna. As you can see it seems to be a good start, but requires a bit more tuning.

A more in depth video coming soon.

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#HamRadio #Shorts #Antenna

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The International Space Station (ISS) is equip with an onboard FM repeater in the amateur radio bands.

I tried listening for the repeater to see if I could hear it on my Icom IC-705.

The Amateur Radio on the International Space Station (ARISS) announcement:

"The ARISS team is pleased to announce that set up and installation of the first element of our next generation radio system was completed and amateur radio operations with it are now underway"

"Initial operation of the new radio system is in FM cross band repeater mode using an uplink frequency of 145.990 MHz with an access tone [CTCSS] of 67 Hz and a downlink frequency of 437.800 MHz".

ISS 437.800 MHz cross band FM repeater activated

⏱️TIMESTAMPS⏱️
0:00 Listening to the ISS voice repeater using a Icom IC-705

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#ISS #HamRadio #IC705

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