04-27-2026, 11:33 AM
MrFixr55
The 1L6 tube is rare and expensive these days. This tube is used only to support the high-frequency SW bands above 10 MHz. Below this range, a regular 1R5 tube works perfectly.
This is incredible because these tubes are truly very different, but it works if you use a 1R5 instead of a 1L6, simply by installing it in the base!
And this even works for the 25-19-16 meter bands. It might be slightly less stable and sensitive, but that's not important right now.
I've already mentioned this trick and tested it on all my radios equipped with a 1L6 tube. I might try the opposite trick – a 1L6 instead of a 1R5, just for fun.
As I wrote above, we no longer need to worry about supporting any channels other than BC, since there are currently no such stations.
The 1L6 tube is rare and expensive these days. This tube is used only to support the high-frequency SW bands above 10 MHz. Below this range, a regular 1R5 tube works perfectly.
This is incredible because these tubes are truly very different, but it works if you use a 1R5 instead of a 1L6, simply by installing it in the base!
And this even works for the 25-19-16 meter bands. It might be slightly less stable and sensitive, but that's not important right now.
I've already mentioned this trick and tested it on all my radios equipped with a 1L6 tube. I might try the opposite trick – a 1L6 instead of a 1R5, just for fun.
As I wrote above, we no longer need to worry about supporting any channels other than BC, since there are currently no such stations.
If you want to work, lie down and sleep, and everything will pass.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
