[Central-Electronics] 20-A SSB Question

[Jim Candela]

Tom,

    The SB1 & SB2 vary in which is LSB, or USB depending on whether the 
9 mhz is added to or subtracted from. So with a CE modified BC-458, LSB 
on 160M is SB2, and is SB1 on 80m. Yes a source of a lot of confusion!!

  80m SB1 = LSB ( 9 - 5.5 = 3.5 Mhz)
160m SB2 = LSB [(2 X 5.5) - 9] = 2 Mhz
40m SB2 = LSB [(3 X 5.5) -9] = 7 Mhz
20m SB2 = USB ( 9 + 5.5) = 14.5 Mhz

(methinks!)

Jim
WD5JKO

On 10/8/2011 3:00 AM, Tom Elmore wrote:
> This evening while working a station on 160 on 1850 kc  about 100 miles to
> the south of me he couldn't hear me while on SSB. I switched the 20-A over
> to AM and put in a few watts of carrier and he was able to hear me quite
> well according to him. I switched back to SB1 position and he was unable to
> hear me. I am using a HQ-170A for the receiver and I was able to hear my own
> SSB signal on LSB while in the Cal position.  This has me puzzled while I
> can hear my own signal on SSB but the station I was working could only hear
> me when I was in AM mode.  I assume on the 20-A that SB1 equates to LSB and
> SB-2 to USB?
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> Thank You
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> Tom Elmore KA1NVZ
>
> Anchorage, Alaska
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