On Nov 27, 2007 4:53 PM, <[EMAIL PROTECTED]> wrote: > > ----- Original Message ----- > Subject: Re: [AMRadio] HRO-50 > Date: Tue, November 27, 2007 15:48 > From: "jeremy-ca" <[EMAIL PROTECTED]> > > > We got plenty of all era HRO's in for service and a jig was not used. Once > > you got the knack it was easy. The holes in the chassis are there for a > > reason. > > > Hi Carl! > > Are you referring to the holes in the TOP of the chassis for the high-end > adjustments, or holes in tha back of the coil rack, under chassis, for the > low-end adjustments? Neither of my HROs (a 2.5V heater 1935 model, & and > HR0-7R) have the latter, so the coil racks need to be removed for the > bottom-end-of-range adjustments. I do understand certain models had them, > but mine don't :>(
I'd like to learn more about this process at some point. I know you have some experience with the older HROs Larry, and Carl worked for National for a number of years, so he probably spits pinwheel dials. I figure between the two of you, I should be able to figure it out. The rig in question is a '47 HRO C utilizing the HRO 5RA1 receiver. I'm trying to put together a set of the 'bright faced' coils, or maybe just find the aluminum plates for the coils that came with the set (currently a mishmash of types). The thing was pretty numb initially. Tweaking a few of the coils ever-so-slightly helped, but there's a specific order to follow and I know I didn't do this (having no clue what the order is). All things being equal (good tubes, proper IF alignment), what is the best way to align the coils? ~ Todd, KA1KAQ ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
