Hi,

I have an HW7 and I am trying to align the VFO to the dial, but I
need a tool to turn the lower core what tool do I use? I have tried some of
the various tools at Radio Shack but they are too wide and turn the upper
core as well. There is no spec for this tool, any help will greatly be
appreciated.


Rob

In article , Rob Kling
wrote:

I have an HW7 and I am trying to align the VFO to the dial, but I
need a tool to turn the lower core what tool do I use? I have tried some of
the various tools at Radio Shack but they are too wide and turn the upper
core as well. There is no spec for this tool, any help will greatly be
appreciated.

Rob-

I have the HW-8, and the tool for that is the Heath part number 490-1.
The 490-1 is a combination tool that Heath supplied with several other
kits such as the HW-100/SB-100 series. I have one tool that I believe to
be the 490-1, but there is no marking on it other than the Heath name.

I measured mine, although it may have worn some over the years. Picture a
white plastic tool with a dual hex at each end. The first hex is about
0.070 or 0.075 inches flat-to-tlat, and 1/4 inch long. The second hex is
about 0.100 inches flat-to-flat, also 1/4 inch long.

At one end, the neck is about 0.125 inches diameter by 1 inch long, so it
cannot be inserted any deeper than the second hex.

At the other end, the neck is about 0.09 inches diameter by 2 3/8 inches
long. Thus, it allows the hex portion to pass through the first slug, and
enter the second.

The two ends are separated by a grip that is about 0.225 inches diameter
by 1 3/4 inches long. If you have the manual, there should be a drawing
of it in the mechanical parts list, and that should make these dimensions
make sense.

If you didn't know already, using a metal tool to adjust these cores will
almost certainly crack them. The cracked edges of the core will dig into
the coil form, making it very difficult to turn them!

73,
Fred
K4DII

"Rob Kling" wrote in message
...

I have an HW7 and I am trying to align the VFO to the dial, but I
need a tool to turn the lower core what tool do I use? I have tried some
of
the various tools at Radio Shack but they are too wide and turn the upper
core as well. There is no spec for this tool, any help will greatly be
appreciated.

Try a TV parts jobber for tools.

"Homer J Simpson" wrote in message
news:jiESg.31682$Lb5.12069@edtnps89...

"Rob Kling" wrote in message
...

I have an HW7 and I am trying to align the VFO to the dial, but I
need a tool to turn the lower core what tool do I use? I have tried some
of
the various tools at Radio Shack but they are too wide and turn the upper
core as well. There is no spec for this tool, any help will greatly be
appreciated.

Try a TV parts jobber for tools.



Are you sticking the part that fits the top slug - far enough in to "fit"
the bottom slug and "not" interfere with the top slug? BOTH slugs usually
use the same size tool. IF nothing else, remove the bottom cover. The same
coil with the Bottom slug - SHOULD be accessible there.