SB series sensitivity

[Eddy Swynar]

Hello Mark...

I've never made any hard & fast quantitative measurements with my SB-301,
but I do know this much: without a doubt, it's one of the most sensitive,
stable, yet easy-to-work-on receivers that I've ever encountered in my 30
years as a Ham...

...And they're still priced 'way below the going rate for an SX-88, to boot!
Hi Hi.

~73~ Eddy VE3CUI - VE3XZ




----- Original Message -----
From: "Mark Graalman WB8JKR" <wb8jkr at JUNO.COM>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Thursday, January 18, 2001 12:05 PM
Subject: SB series sensitivity


>   Hi All,
>
>   I recently restored a Heath SB-301 receiver and
> last night I made some MDS measurements that
> really surprise me, I'm wondering if anyone else
> has made like measurements that compare to
> mine, they seem a bit too good if you know what I mean:
>
>
> SB-301
>
> 80 meters MDS -136 dbm
> 40 meters MDS -136 dbm
> 20 meters MDS -136 dbm
> 15 meters MDS -135 dbm
> 10 meters MDS -135 dbm
>
> (40 meters S9 = 32 uv)
>
>  This equates to roughly about .08 to .1 uv for 10db S/N
> on SSB and is considerably better than the Heath specs.
> The above measurements were done with the SSB filter
> which make the readings even more amazing to me.
>  I do believe them to be within 2 or 3 DB maximum.
>
>   I was thinking about trying the 6HS6 mod to the RF and
> maybe first mixer, but I don't see the point now.
>
>   Any thoughts ?
>
> 73,  Mark  WB8JKR
>
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