[Hammarlund] Hammarlund Digest, Vol 172, Issue 4

[Richard Knoppow]

    I wonder if any HQ-129-X were made with 15 meter dials. I 
think they had already replaced the  129 with the 140 by then. 
Possibly there were replacement dials but I have never seen 
anything in the literature about them  Of course, the 129 works 
fine on 15 meters, you just have to make a logging scale for it.

On 3/23/2020 11:07 AM, manualman at juno.com wrote:
> The 15-meter band was designated by the 1947 International Radio
> Conference. The 15-meter band opened to amateurs for CW operation only in
> the United States on May 1, 1952, and telephony operations were
> authorized above 21250 kHz on March 28, 1953.
>
> Manufacturing dates of the Hammarlund HQ-129X were roughly from 1946 to
> 1953.
>
> Pete, wa2cwa
> www.manualman.com
>
> On Mon, 23 Mar 2020 10:07:55 -0700 Richard Knoppow
> <1oldlens1 at ix.netcom.com> writes:
>
>>      I don't think the 15 meter band was established during the
>> manufacturing lifetime of the HQ-129-X. Red lettering makes it an
>> early model. Cycles was not changed to Hertz until pretty late,
>> way past the time these receivers were built.
>>      I have been told but can't say personally, that the dials for
>> the HQ-140 will fit the HQ-129 and HQ-120. So one could up grade
>> and get band spread dial with   15 meters on it.
>>      Actually, I have an HQ-120-X where both dials have
>> delaminated. If the dials for the later models would fit I could
>> fix it. I have not done a serious search for any. Perhaps someone
>> here knows if this works.
>>
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL