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Hello-
I have an unusual problem perhaps someone could shed some light on:
I have a TR-4 in 29K serial range that functions normally
except it will not go back into receive, until after approx 30 second
delay, after the mic button is released or the function switch turned
back to "SSB". This condition worsens (longer delay) the more you
frequently you transmit. The sidetone disappears but T-R relay will
not release.
I have tried different known-good 6EV7 tubes, have replaced a lot
of the coupling / bypass caps in T-R circuits, did resistance /
voltage checks, adjusted the VOX / VOX delay controls, tried other
tubes in T-R circuit, etc. to no avail.
What is real curious about this is that while waiting for it to go
back into receive and T-R relay is engaged, IF YOU PULL THE 6EV7 FROM
ITS SOCKET THE T-R RELAY STILL DOES NOT RELEASE. I suspect the issue
is with the lead that goes from T-R relay coil to pin #1 on 6EV7
(somehow allowing enough leakage to ground?) or could it be the T-R
relay coil itself I made sure socket / pins and all are clean on 6EV7.
Any help appreciated, thanks.
Perplexed,
Byron WA5THJ.
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也正因为 Apache Kylin 社区是开源社区,所有用户和 Committer 都是志愿进行贡献的,所有的讨论和求助是没有 SLA(Service Level Agreement)的。为了提高讨论效率、规范提问,建议用户在撰写邮件时详细描述问题的出错情况、重现过程、安装版本和 Hadoop 发行版版本等,并且最好能提供相关的出错日志。另外,因为用户的全球化,建议提问时使用英文撰写邮件内容、至少保证邮件主题使用英文。有一篇关于如何提问的How To Ask Questions The Smart Way 文章,推荐阅读。
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