[Milsurplus] Hammarlund RBG questions

[Al Klase]

Cal,

I believe Radioman is correct.  The HQ-120 has three subsections in each 
section of the band-spread capacitor that are selected by the band 
switch to provide appropriate spread for each ham band.  This is one of 
the marvels of the 120 design.  Otherwise, the amount of spread tends to 
increase with frequency, and the situation is compounded by the 80-meter 
band being a large percentage of the selected band.
The RBG has a simple, one subsection, band-spread capacitor so it's not 
going to work with the 120, 129, etc. dial scales.  See schematics on BAMA.

Al

On 11/30/2012 1:50 PM, radioman390 at cs.com wrote:
> You might end up disappointed unless the inductances and capacitances 
> in the tuned circuits of your RBG match those of the commercial 
> radios. You might find the dials reading corrrectly at some points, 
> but the rest of the dial readings may not track correctly. Maybe a 
> digital readout would not only be easier,but calibration would be exact
>
> -----Original Message-----
> From: C Eus <catman351 at gmail.com>
> To: milsurplus <milsurplus at mailman.qth.net>
> Sent: Fri, Nov 30, 2012 12:59 pm
> Subject: [Milsurplus] Hammarlund RBG questions
>
> Does anyone have an RBG? I'm interested in replacing the dials with
> something geared towards conventional ham radio and shortwave bands.
> Been thinking about finding a set of HQ-120, 129, 140, or 150 dials to
> replace the ones that are in there now.  Any suggestions or help in
> this are is appreciated! Thanks. Cal, W4PTO.
> ______________________________________________________________
>

-- 
Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/