Re: [BVARC] Tube testing
I thought I was the only one who had an HW-100. On 2/17/24 11:54, Andre Pollard via BVARC 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/ -- Jonathan Guthrie ARS KA8KPN 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/
Re: [BVARC] Tube testing
Bring the tubes by my electronics shop in Meyerland any day during the week. I have a tube tester, and even a couple buckets of old tubes in case one of your tubes fail testing. 73'sRodNK5Q Sent from Yahoo Mail on Android On Sat, Feb 17, 2024 at 14:23, mark roman via BVARC wrote: 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/
Re: [BVARC] Tube testing
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 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 > 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 > 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 *On Behalf Of *rodney martinez >> via BVARC >> *Sent:* Saturday, February 17, 2024 12:39 PM >> *To:* BRAZOS VALLEY AMATEUR RADIO CLUB >> *Cc:* rodney martinez >> *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=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers_wl=ym_sub1=Internal_sub2=Global_YGrowth_sub3=EmailSignature> >> >> >> >> On Sat, Feb 17, 2024 at 11:55, Andre Pollard via BVARC >> >> 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/ > 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/
Re: [BVARC] Tube testing
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 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. 73John, KI5HOCOn 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 BVARCSent: Saturday, February 17, 2024 12:39 PMTo: 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.832-423-564073'Rod MartinezNK5QSent from Yahoo Mail on Android 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 listBVARC@bvarc.orghttp://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.orgPublicly 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 ClubBVARC mailing listBVARC@bvarc.orghttp://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.orgPublicly 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/
Re: [BVARC] Tube testing
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 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 *On Behalf Of *rodney martinez > via BVARC > *Sent:* Saturday, February 17, 2024 12:39 PM > *To:* BRAZOS VALLEY AMATEUR RADIO CLUB > *Cc:* rodney martinez > *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=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers_wl=ym_sub1=Internal_sub2=Global_YGrowth_sub3=EmailSignature> > > > > On Sat, Feb 17, 2024 at 11:55, Andre Pollard via BVARC > > 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/
Re: [BVARC] Tube testing
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 On Behalf Of rodney martinez via BVARC Sent: Saturday, February 17, 2024 12:39 PM To: BRAZOS VALLEY AMATEUR RADIO CLUB Cc: rodney martinez 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=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers_wl=ym_sub1=Internal_sub2=Global_YGrowth_sub3=EmailSignature> On Sat, Feb 17, 2024 at 11:55, Andre Pollard via BVARC mailto: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 <mailto: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/
Re: [BVARC] Tube testing
I have a tube tester. You can bring them by my shop any day next week.832-423-564073'Rod MartinezNK5Q Sent from Yahoo Mail on Android On Sat, Feb 17, 2024 at 11:55, Andre Pollard via BVARC 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/
Re: [BVARC] Tube testing
EPO has a tester in the store. On Sat, Feb 17, 2024, 12:14 PM Michael Shanks via BVARC wrote: > EPO > Sent from my iPhone > > > On Feb 17, 2024, at 11:55 AM, Andre Pollard via BVARC > 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/
Re: [BVARC] Tube testing
I can test your tubes, can bring my machine to the hamfest on Saturday, if you let me know in advance, otherwise I will not bring it. I will be at the check-out table most of the day. Or you may visit me in southwest Houston. You may text me at 832-475-7219, text, please. Of course you may know this but the numbers on the tubes can be rubbed off by inattentive handling. Then smoke is possible. EPO has a tube tester also, but it does not test as fully as mine, which tests gm. 73 John, KI5HOC On Sat, Feb 17, 2024 at 11:54 AM Andre Pollard via BVARC 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/
Re: [BVARC] Tube testing
EPO Sent from my iPhone > On Feb 17, 2024, at 11:55 AM, Andre Pollard via BVARC 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/
[BVARC] Tube testing
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/
