Category Archive: Amateur Radio

Apr 10

BITX40: Going Digital with JT65

Last week I posted about adding Upper Sideband to the BITX40, which is not an Upper Sideband radio. Once I got that modification done, I could clearly hear the JT65 signals on 7.076mhz, but… what were they saying? It was time to dive into the world of Digital HF! What is JT65? Simply put, digital …

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Apr 07

Modifying the BITX40 for Upper Sideband

These are the capacitors to remove, c91 and c92

Because some digital modes require Upper SideBand (USB) to work properly, many people have been wondering how to get the BITX40 on Upper Sideband. Well, I’m here to show you- it’s pretty easy! First, we need to understand that to get the BITX40 on Upper Sideband, we just want to change from a negative offset …

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Mar 06

Adding 80m to the BITX40

Update: Because of the lack of filtration, this is a really dirty way of doing it. Instead, a new Band Pass Filter and Low Pass filter should be used. It’s inexpensive and a fairly simple modification. read about it here: Converting the BITX40 to 20M A common question for people have about the BITX40 is “Can I …

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Feb 09

BITX40 Builds: M6YPA’s 3D Printed Case and Microphone

Today we bring you a beautiful 3D printed case from Adrian Cattell, M6YPA. Here are the pictures. See below for Adrian’s description of the case, and how it came to be. Thanks for sharing, Adrian! Update: This case is now available for purchase from Dave, KE0KHA. Click Here to go to his site and get one of …

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Feb 01

BITX40 Builds: AB1OP and the PC Power Supply Case

Ralph [AB1OP] shared his BITX40 build on the BITX40 Facebook group this week. For his build he’s re-purposed an older PC Power Supply case, and given it a custom printed front panel. Ralph explains what it took: “This is my BITX40 pcb in an old PC PSU enclosure – just enough room. In fact I …

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