[Heathkit] Help with SB-401 plate,driver,osc slugs???
W5RKL
w5rkl at yahoo.com
Wed Jan 7 20:31:11 EST 2009
Dan,
Yes, if the slugs are there they should be adjusted.
An important step before adjusting the driver grid and driver plate coils. The manual states to adjust the individual band's "oscillator" coils for a specific voltage. This is outlined in the manual and must be done before adjusting the driver grid and driver plate coils.
The coil cover must be in place and secured with the round nuts while making the adjustment to the driver grid and driver plate. Making the adjustments with the coil cover off will cause the adjustments to change when the cover is put in place.
The coils are not all the "same" type with the same gauge wire. This is normal.
73
Mike
W5RKL
--- On Wed, 1/7/09, Dan Pividal <dpividal at tampabay.rr.com> wrote:
From: Dan Pividal <dpividal at tampabay.rr.com>
Subject: [Heathkit] Help with SB-401 plate,driver,osc slugs???
To: "heathkit at mailman.qth.nt" <heathkit at mailman.qth.net>
Date: Wednesday, January 7, 2009, 7:14 PM
Well, I am doing an alignment on my SB-401.
80 and 40 meters was easy.
Each band had visible coils in the plate,osc and driver sections inside the metal compartment beneath the finale rod going to the finale compartment.
However, in the plate section and the grid section I don't see the same type of coil in the 28.0 or 21.0 holes of either section.
I do see something way down the holes almost even with the floor inside the metal box.
Are those tuning slugs?
The manual says to peak grid, plate and osc coils.
I will not do anything until I hear from the list.
Thanks,
Dan/N4VET
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