Category: DIY

HAMsmithing – DIY Baofeng Programming Cables

I will guess that more than half the people that tried to program one of the Baofeng failed victim to the fake programming cable chip plague.

It happened to me also, and the process of finding a working driver, to no avail, killed my will to move further.

Enter the Baofeng T-1 mini radio and its programming cable that really worked!

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Since it terminates to a mini-USB connector I quickly formulated the plan to hacking it for my UV-5R and UV-3R radios.

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HAMsmithing – Off-grid Charging for the Baofeng UV-5R and UV-3R Radios.

 

Chinese radio users know well, that grid power is needed to charge their radios. The reason is that their charging is tied on the 110/220V power and the radios’ own cradle charger.

To eliminate the charger it is impossible, but to replace the power to the charger is possible.

The Baofeng UV-5R and siblings’ charger demands 10V and there are various ways to replicate that.

  1. Use a 12Vto 10V car socket cable.
  2. Use a 5V to 10V USB cable.
  3. Use a battery system that outputs 10V

The latter is one such build.

Continue reading “HAMsmithing – Off-grid Charging for the Baofeng UV-5R and UV-3R Radios.”

HAMsmithing – October 2017

Here are two small projects for the beginning of this month.

12V to 10V Adapter Cable for Baofeng UV-5R Charging

A common mistake made is using a cigarette lighter power cord for powering the Baofeng UV-5R Charger. Problem is that the charger needs 10V and not the battery 12.8V, much less the 13.8V when a car battery is charged.

My solution was to make an adapter cable with a resistor inline to drop the voltage to a bit more than the 10V spec’ed.

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A Small, Pocketable Antenna Kit for Handheld Radios

I call it the Giveaway Antenna Kit. Because it has the capability to be adapted to any handheld radio, that is, the antenna connector style of any handheld radio. So you can have it in your larger radio kit, and give it away to anyone in need without bothering for compatibility with his radio.

The basic idea stems from this idea by Bret of Survival Comms Youtube Channel . The use of the handheld radio’s own (actually aftermarket improved) antenna on a groundplane kit. In my built, the groundplane (radials’) kit is much simpler and easier to use. You just attach the antenna kit wire to fit your HT.

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Construction

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Ενα μικρό Κιτ Εξωτερικής Αντένας για το Φορητό σας Ασύρματο

Οι φορητοί μας ασύρματοι υστερούν στην αποτελεσματικότητα τους για δύο λόγους. Έχουν μέτρια , έως κακή κεραία, και δεύτερον έχουν χαμηλή ισχύ.

Μπορούν όμως να βελτιωθούν προσθέτοντας μια καλύτερη κεραία (κάντε το οπωσδήποτε) και επίσης -αν μένουμε σταθεροί- μια κεραία βάσης.

Η ιδέα μου βασίζεται στην ιδέα του Bret από το Survival Comms. Στην ουσία μετατρέπει την βελτιωμένη κεραία του φορητού ασυρμάτου σε μια groundplane κεραία βάσης, κατασκευάζοντας ένα προσαρμογέα με radials.

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Η κατασκευή μου προχωρά παραπέρα δημιουργώντας ένα εύκολα κατασκευάσιμο κιτ radials.

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HAMsmithing – September 2017

Just as September was ending, I spent quite some time on small HAM projects.

1. I received the connectors and cables I ordered, so I sat down making cables for each DIY antenna I have.

2. I used some leftover PVC pipe to add 2 more sections in my collapsible antenna pole. Each section is 130cm (about 1.5 yards long), the wider my car trunk will allow. That makes for about 7 yards total height, just short of what one would need to make a sloping longwire antenna.

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HAMsmithing July 2017

This is a DIY USB charging cable for my Kenwood TH-F6A/F7E handheld radio.

web-IGP3869It is the same concept like the Baofeng USB to 10V charging cables that are found on eBay and amazon. But the virtue of the Kenwood HT is that it accepts a wide array of operating and charging voltage. Plugged to a 12V source it both charges and operates.

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