[600MRG] Buying "NOS" line filters?
Tom W8JI
w8ji at w8ji.com
Sun Jan 12 13:37:56 EST 2025
Transient abuse or lighting damage might be an issue with used filters.
Physical damage might be a concern, but you could see that.
Given the high quality parts used in power line filters I wouldn't worry
a bit about age or handling issues.
73 Tom
On 1/12/2025 5:02 AM, Paul N1BUG FN55mf wrote:
> Does anyone have thoughts on possible risks of buying new, old stock AC
> line filters on eBay? I am tempted as I see some good deals but I wonder
> about aging of high value capacitors (1.5 uF, .47 uF). I also wonder
> about possible damage from dropping or sudden impact since they probably
> use ferrite for high value inductors (47 mH). These filters that have
> good performance at LF and into VLF are very different in terms of parts
> values, size and weight from the ones I have experience with at HF, VHF
> and UHF frequencies. The more I think about it, the more I think paying
> almost twice as much at Digi-Key or Mouser is probably wise.
>
> 73,
> Paul N1BUG
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