[Heathkit] Re: Heathkit HX-10 "Marauder" and matching Receiver "Mohawk"

[Glen Zook]

By your definition the SX-101 is NOT the matching
receiver for the HT-32 series because the earlier
versions covered 160 and the later versions have the
converter band.  Whereas the HT-32 units cover 80
through 10 meters.

The HQ-170 is not the matching transmitter for the
HX-50 series because it also covers 6 meters.

The Yaesu FRdx400 receiver is not the matching unit
for the FLdx400 transmitter because the receiver
covers 160 meters, 6 meters, and 2 meters whereas the
transmitter only covers 80 throuh 10 meters.  Also,
the receiver can receive FM with the adapter.

The Collins 75A2 is not the matching receiver for the
32V2 because the 75A2 covers 160 and 11 meters whereas
the 32V2 covers 80 through 10 meters.  Also, the 75A2
has NBFM coverage with the adapter.

The Collins 75A3 is not the matching receiver for the
32V3 for the same reasons as the 75A2 and the 32V3.

The Collins 75A4 is not the matching receiver for the
Collins KWS-1 because it covers 160 meters and 11
meters whereas the KWS-1 only covers 80 throuh 10
meters.

The Mohawk cannot be the matching receiver for the
Apache since it covers 160, 11, and the converter
bands and the transmitter only covers 80 through 10
meters.

Then, most amateur band only receivers also have a WWV
band for calibration of the 100 KHz calibrator.  With
the exception of a very few continuous coverage
transmitters, the "matching" transmitters don't cover
a WWV frequency.  As such, under your criteria, there
are not any matching receivers!

Sure makes sense to me!  There are virtually no
matching receivers and transmitters including the
Heath SB-300 / SB-400 and the Heath SB-301 / SB-401
because of the WWV band on the receivers.

The Collins S-Line receivers are matching because the
transmitters have identical broadband coverage as the
receivers.  Whoops, the receivers can receive AM but
the transmitters are SSB and CW only!  Close, but not
a cigar!

Now, virtually all of the equipment sold during the
1950s and well into the 1960s were actually "stand
alone" equipment.  With the exception of the Collins
S-Line, the Eldico clones of the S-Line, and maybe
one, or two, other units, it was not feasible to
"transceive" using the receiver to control the
transmitter as they came from the factory.  You had to
"zero beat" the transmitter separately from the
receiver.  Under this definition, with the exception
of the aforementioned equipment, there were no
matching receivers until the mid-1960s.  Whoops, I
forgot about the fact that the Collins and Eldico
transmitter don't run AM but the receivers can! 
Heath's first "matching" receiver under this criteria
(although still not a "matching" receiver due to the
WWV band and the fact that they can also receive AM)
would be the SB-300 which could transceive with the
SB-400.

Glen, K9STH


--- Greg Mijal <bluebirdtele@earthlink.net> wrote:

"Matching receiver and transmitter"  generally means
to a ham that both units will have the same frequency
and mode coverage. There doesn't seem to be a
redefinition of the phrase from the 50's to now.
Mohawk/Marauder band coverage do not "match"
Documentation: "Matching receiver and transmitter"
generally means to a ham that the receiver manual will
discuss the integration of the transmitter into the
"matching" system and vice vesa. There doesn't seem to
be any changes to that expectation either.

I think Heathkit marketed the Marauder as whatever you
wanted to think it was,  they wanted it both ways,  as
a stand alone transmitter kit  and as a "match" for
the Mohawk.  They got a visual match ok but the
coverage and the manual say otherwise.

=====
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

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