Re: [AMRadio] National Knob
Don, Thanks for the excellent information. It will make the search much easier. Rick/K5IZ D. Chester wrote: The original velvet vernier was black bakelite. It had 0-100 scale, and looked very similar to the old bakelite dials on 1920's broadcast radios, except that it has the planetary drive mechanism... __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re:[AMRadio] National Knob
Does anyone happen to have a National catalog with their vernier tuning mechanisms in it? I need the number of the 3" National Velvet vernier knob and assembly. I actually need the product, but they seem to be very scarce. I just happen to think, maybe it's in an old Handbook! Thanks, Rick/K5IZ The original velvet vernier was black bakelite. It had 0-100 scale, and looked very similar to the old bakelite dials on 1920's broadcast radios, except that it has the planetary drive mechanism. That was known as the "Type A" dial. It came in two sizes, one about 4" in diameter, and a smaller size about 3" in diameter. After WW2 it was replaced with the type AM dial (type A - Metal). The planetary mechanism is identical, but the dial skirt is bright metal instead of black bakelite. It only comes in one size, about 3" in diameter. They also made a variation with a real vernier scale on it, like the scale on a vernier caliper. This allowed precise setting of the dial for frequency meters and similar applications. There is also a Type B Velvet Vernier, which has a small peep-hole scale and a smaller tuning knob, as well as a variable reduction ratio. These look similar to another type of early broadcast receiver dial. These use a friction drive against a small wheel, instead of the planetary drive mechanism. Don k4kyv __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] National Knob
Rick, there is a Number 3 vernier, along with 9 other varieties on E-bay under "National Vernier". No affiliation with the sellers, just FWIW item is at -- 290082212768 Jim WB2FCN - Original Message - From: "Rick Brashear" <[EMAIL PROTECTED]> To: Sent: Monday, February 12, 2007 11:14 AM Subject: [AMRadio] National Knob Does anyone happen to have a National catalog with their vernier tuning mechanisms in it? I need the number of the 3" National Velvet vernier knob and assembly. I actually need the product, but they seem to be very scarce. I just happen to think, maybe it's in an old Handbook! Thanks, Rick/K5IZ __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] National Knob
Hi Rick, It was probebly the PW dial which had the vernier built in. It was a 10:1 ratio. Sold fopr $7.95 in 1945. Other dials in the series were the PO-0 series which had the gear reduction in a vertical or horizontal arrangement behind the panel but used a similar looking dial. 73, John, W4AWM __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] National Knob
Does anyone happen to have a National catalog with their vernier tuning mechanisms in it? I need the number of the 3" National Velvet vernier knob and assembly. I actually need the product, but they seem to be very scarce. I just happen to think, maybe it's in an old Handbook! Thanks, Rick/K5IZ __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
