HMV 1124 Alignment - UK Vintage Radio Repair and Restoration Discussion Forum

stitch1 · 21st Aug 2011, 5:56 pm

Hi,
I'm probably missing something obvious here but can any one tell me what 'Rock Gang' means?

On the alignment notes the service manual describes using the calibration scale on the back of the gang capacitor drum which is calibrated in inches and 16ths of an inch. The table shows which Calibration Scale Setting to use i.e 8 7/16s but also has the setting Rock Gang, is this max or min or something else?

Not sure if that makes sense so I've attached an extract from the manual.

Thanks

Herald1360 · 21st Aug 2011, 7:58 pm

Rock Gang: A group of convicts on rock breaking duties

, or perhaps.......

Rock the tuning capacitor (the gang(ed capacitors)) slightly either side of nominal. Done to confirm that a setting is peaked at the point in question, when output will fall either side of nominal.

It's a term in radio use a bit akin to "hit any key when ready"..... "Any key? Where's the ANY key?"

stitch1 · 21st Aug 2011, 8:47 pm

Quote:

Originally Posted by Herald1360

Rock Gang: A group of convicts on rock breaking duties

, or perhaps.......

I saw that one coming

Quote:

Originally Posted by Herald1360

Rock the tuning capacitor (the gang(ed capacitors)) slightly either side of nominal. Done to confirm that a setting is peaked at the point in question, when output will fall either side of nominal.

Of course I should of realised, that makes sense now.

Thanks for the info.

Happy for this to be closed.

21st Aug 2011, 5:56 pm	#1
stitch1 Heptode Join Date: Jan 2008 Location: Durham, County Durham, UK. Posts: 826	HMV 1124 Alignment Hi, I'm probably missing something obvious here but can any one tell me what 'Rock Gang' means? On the alignment notes the service manual describes using the calibration scale on the back of the gang capacitor drum which is calibrated in inches and 16ths of an inch. The table shows which Calibration Scale Setting to use i.e 8 7/16s but also has the setting Rock Gang, is this max or min or something else? Not sure if that makes sense so I've attached an extract from the manual. Thanks Attached Thumbnails

21st Aug 2011, 7:58 pm	#2
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,536	Re: HMV 1124 Alignment Rock Gang: A group of convicts on rock breaking duties , or perhaps....... Rock the tuning capacitor (the gang(ed capacitors)) slightly either side of nominal. Done to confirm that a setting is peaked at the point in question, when output will fall either side of nominal. It's a term in radio use a bit akin to "hit any key when ready"..... "Any key? Where's the ANY key?" __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O Last edited by Herald1360; 21st Aug 2011 at 8:05 pm.