Differences between SB-300 and SB-301?

[Ed Richards]

Hi, Dave;

Some comments:

You cannot interchange filters between the two without serious
modifications. They are physically different.

Some of the improvements the SB-301 has:

   1. Addition of a RTTY position on the mode switch.
   2. Addition of a 15.0-15.5 position on the bandswitch for WWV
reception.
   3. Addition of an ANL circuit.
   4. Addition of a front panel control for the VHF converters.
   5. The characteristics of the filters is different. The AM filter has
been widened and the CW filter narrowed.

According to a Heathkit bulletin you must remove the crystal pack (10)
and realign both the transmitter and receiver connected together, for
transceive operation. Don't plan on just switching back and forth with
the front panel switch.

If it were me, I would try to acquire the filters for the SB-301 and sell
the SB-300.  Better yet; sell them both and get a SB-102.

Good luck,

Ed Richards

On Sun, 14 Oct 2001 10:10:47 -0700 Dave Ellison <deellison at USWEST.NET>
writes:
> Hello all,
>
> I have recently arranged to purchase a fully loaded
> SB-300 receiver - has both 2m and 6m converters,
> and also has all three filters.
>
> I have in my shack an SB-301 with only the SSB
> filter.  It works fine as well.
>
> I'm planning to run it with my SB-401 transmitter in
> transceive mode, as well as stand-alone (The SB-401
> has the crystal pack).
>
> So my question:  Would it be worth the effort to move
> the filters and converters from the SB-300 to the SB-301
> to gain the assumed improvement in model?  What
> are the primary differences between the two?  Or is
> it just as well to just use the SB-300 with my SB-401
> and sell off the SB-301 as it sits?
>
> Thanks for your opinions.
>
> Dave WB7AWK
> www.Boatanchors.com
>
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