I would say WA5ARI Reed would be best for that. From KI5WRI Mark. On Sat, Feb 17, 2024 at 2:16 PM Andre Pollard via BVARC <bvarc@bvarc.org> wrote:
> Agreed, my experience as well from old tube TVs. Just want to make sure > none are shorted before throwing the HV to it. Trying to limit smoke > generation > > On Feb 17, 2024, at 1:40 PM, John Mechura via BVARC <bvarc@bvarc.org> > wrote: > > > > Absolutely, John P., if the checker says it is good, well, maybe. If it > says it is bad, as in shorted on the checker then believe it. > > However it is quite possible for a "weak" tube to still do yeoman's duty > depending on the circuit. > > There was a time when I was fixing TVs that when it was required to align > the IF stages, after connecting the sweep gear, just simply trying > different tubes in the three IF amplifier stages might bring you closer to > final alignment. This was when tubes were plentiful, though. Oh, by the > way, the IF bandpass was 6Mhz wide with an "M-derived" trap at 41.25 Mhz. > > OK, sorry to bore with stories of "glory days" but y'all are the only > audience that I can share stories like this with. > > 73 > John, KI5HOC > > On Sat, Feb 17, 2024 at 1:04 PM John Parmalee via BVARC <bvarc@bvarc.org> > wrote: > >> I think your best test is to put them in the rig and fire it up watching >> the output, the drive and maybe reading grid voltage stage to stage. >> >> >> >> *From:* BVARC <bvarc-boun...@bvarc.org> *On Behalf Of *rodney martinez >> via BVARC >> *Sent:* Saturday, February 17, 2024 12:39 PM >> *To:* BRAZOS VALLEY AMATEUR RADIO CLUB <bvarc@bvarc.org> >> *Cc:* rodney martinez <sota...@yahoo.com> >> *Subject:* Re: [BVARC] Tube testing >> >> >> >> I have a tube tester. You can bring them by my shop any day next week. >> >> 832-423-5640 >> >> 73' >> >> Rod Martinez >> >> NK5Q >> >> Sent from Yahoo Mail on Android >> <https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature> >> >> >> >> On Sat, Feb 17, 2024 at 11:55, Andre Pollard via BVARC >> >> <bvarc@bvarc.org> wrote: >> >> I am currently restoring my old Heathkit HW-100. It was working the last >> use, around 1980 or so. Checking out resistors and changing electrolytics. >> >> >> >> I want to check the tubes. Anyone know if a vendor at the Hamfest can >> check them? Or know someone else that can? >> >> >> >> >> >> >> >> ________________________________________________ >> >> Brazos Valley Amateur Radio Club >> >> >> >> BVARC mailing list >> >> BVARC@bvarc.org >> >> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >> >> Publicly available archives are available here: >> https://www.mail-archive.com/bvarc@bvarc.org/ >> >> ________________________________________________ >> Brazos Valley Amateur Radio Club >> >> BVARC mailing list >> BVARC@bvarc.org >> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >> Publicly available archives are available here: >> https://www.mail-archive.com/bvarc@bvarc.org/ >> > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > BVARC@bvarc.org > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/bvarc@bvarc.org/ > > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > BVARC@bvarc.org > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/bvarc@bvarc.org/ >
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