PEC's

[Charles W. Morehouse]

Hi John,
Am sure that all of us would like to get the values used in the 84-39 and 84-40
PEC's used in the SB-610. Many tx.
Wayne;
W4GBW

john wrote:

> If they have the centralab numbers on them, I have a catalog that
> shows the schematics and values for most....
> Best
> John
>
> At 10:18 AM 8/2/01 -0700, Stewart D. Lyon wrote:
> >Hi Mike,
> >You should be able to reverse-engineer those things. Since there are five RC
> >elements that give a total of 180 degs phase shift, each element would shift
> >36 degs. The final R is outside the PEC -- on the grid of the oscillator. If
> >one assumes that the Rs inside are the same as the terminating resistor,
> >then the C would be of a value to give 36 deg of phase shift at the desired
> >frequency using the terminating R. (820 & 630 pf ??)
> >
> >As an exercise, I did this calculation on the SB-101 PEC (where the values
> >are given on the schematic) and it works out.
> >
> >Get your calculator out!!
> >73, Stu W6CUX
> >
> >Who designed the SB0610?? Probably the same person that designed the HO-10.
> >
> >----- Original Message -----
> >From: "Mike Shelton" <sheltonm at PHYSICS.UNC.EDU>
> >To: <HEATH at LISTSERV.TEMPE.GOV>
> >Sent: Thursday, August 02, 2001 7:46 AM
> >Subject: PEC's
> >
> >
> >> While everyone is on the subject of the PEC's , the SB-610 uses 2 of these
> >> with different part no's for each. For the sake of asking anyone out there
> >> know what values are in EACH PACKAGE.  I could use this info for some
> >> Restorations-Repairs. Many Thanks to all.
> >> --
> >> Mike Shelton CET.
> >>    ke4lgx
> >> Electronic Technician III
> >> UNC-Chapel Hill
> >
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