[ARC5] Crystal work-around question. OT

[J Mcvey]

The crystal in question is a sealed HC25U type.The frequency is low by about 400 Hz, so it can't be padded. Could it be "brought up" with an adjustable series cap?I have a new one on order, but was wondering if anyone had a "fix" without replacing the crystal?
I suspect too much 'pulling" would cause instability if there was a way.What say you guys?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/arc5/attachments/20200923/13414833/attachment.html>