I'm not worried.
HFSignals is selling thousands of boards and is watching their supply chain closely.
There are alternatives, such as building a filter from crystals, building a sharp LC filter,
going to other frequencies such as the PX1002 I pointed out earlier.
If it's of concern to you, buy some of these:
??https://www.alibaba.com/product-detail/Monolithic-Crystal-Filter-UM-1-UM_296039879.html?spm=a2700.7724857.main07.37.4c2b75e8RSxrUT
Minimum order is 1000 pieces, but at those prices it's still cheap enough.
And you can make a killing when supply finally does dry up.
Yes, they may disappear someday.
Everything that might have used them is moving to digital SDR.
Jerry
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On Tue, Jun 5, 2018 at 06:06 am, David Feldman wrote:
Is the 45 Mhz IF filter (or any of it's variants that could work, including SMD) considered current factory production? Everything else in ubitx seems to be contemporary, but this part might have lifetime issue.
