HW-101 - Putting it on Three Megs!/Putting SB line on other frequencies....

[Dan Ferguson]

I built an SB-310 in 1968.  I had crystals for a number of bands other than
the standard bands that came with it.

I covered 3000-3500 kHz and was even able to tune stations on 3395 kHz (an
Ecuadorian, I think it was) and 3396 kHz (an African I liked to listen to),
even though the IF was 3395.

I covered 4600-5100 kHz for the 60 meter tropical band.  Didn't do too well
at 5050, where the LMO and the tuning range crossed <grin>, but I could
easily tune Lome on 5047 kHz.

I also has a switch inside on the chassis to switch the AM/SSB filters
independently of the mode.


Now clearly what folks need to do is sell me their SB-310s and buy SB-301s.

Dan  K4VOA


At 07:39 12/9/98 -0800, Guy G. Giacopuzzi DDS wrote:
>Paul K. Dean wrote:
>>
>> I did a very similar thing some years ago with an SB-310 receiver.  Wanted
>> to change the 26.9 mhz "CB" band to 10 meter coverage.  Calculated the
>> proper crystal frequency, ordered it from International Crystal. Installed
>> and went through the alignemnt for that band.  Bingo!  10 meter reception!
>
>I own a rather special SB-310--it was built,and used by Radio Free
>Europe...in the manual, they added instructions concerning changing the
>310's frequency to other non-covered bands--you essentially plugged in a
>xtal, and realined the coils...my unit even came with about 6 extra "out
>of band" xtals.  Evidentally, RFE used the unit to monitor other
>shortwave stations and East block jammers.  I haven't tried my unit on
>such frequencies, but, from what I can gather, the tuned circuts have a
>greater range than one would suspect.  This makes a 300/301/310 a rather
>versatile receiver, especially since you get 500kc of range on each
>band; a Collins 753C will only give you 200kc per xtal.  This won't work
>with an SB-303--changing the xtals and getting to the coils is too
>difficult, but it's relatively easy for the 300/301/310 because of the
>flip top lid and easy access to the coil bank. So all you fellows
>bemoaning the fact you can't get a 310', relax, just convert a 300/301!
>
>ggg
>
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+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ Dan Ferguson           K4VOA          Northern Virginia
+ df at mnsinc.com
+
+ Wanted:
+ HEATH SB310/SB620 (wired for 3395 kHz)

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