[R-390] R390A RF Deck slug indentification

[Flowertime01 at wmconnect.com]

Brian,

Slugs popped up just last month as a topic.

The R390/A has just two types of slugs. One type in all 8 octaves of the RF 
section 3 x8 = 24. Type two is in the variable IF section of the RF deck. 
These are 6 each in the IF section behind the 8 octaves of RF cans at the 
front of the RF deck.

The original R390 had different slugs in the various sections of the 8 
Octaves. So all 24 were not the same. But any three in an octave are the same.

R390 and R390/A slug sizes are all the same.
The spring wire can be soldered and or glued back together.
Original slugs were all spline.

If you have a slotted slug bolt it is not likely original.
It may have the original slug under it and it could be a repair.
It could be a late year replacement part. Being easier to put a slotted 
bolt on the slug than to obtain the spline bolts.

If it operates well let it be.

If the octave will not align and peak as well as the other octaves, then 
post a request here for one replacement. Several of the Fellows have some 
spare parts and for a reasonable cost and postage will send you a good 
replacement.

The slugs did have color coded paint dots on them.

There were lots of differences. The color dots were not any assurance the 
slugs were correct. The only real test was to install a slug. Do the 
alignment and power measurements. If the receiver worked to spec the slug was 
acceptable.

You may see different paint dots on the slugs within a given receiver.

Roger AI4NI