President Richard Export (Cobra 148GTL DX) - need a tuning can

[Big Kahuna]

Was doing an alignment and had a weird thing happen. First time I’ve ever experienced this. Put my plastic tuning tool in the notch to adjust and the top bit of the inside plastic slug just fell apart. I was gentle as always but first time I’ve ever had that happen after 30 years of messing with radios. Guessing I’ll need to replace the tuning can. Anyone got a spare or replacement suggestion? L26.

Rest of the alignment went fine.

 

[Enterprise312ok]

I have a junk madison if it has the right can I can pull it and mail it.

 

[Big Kahuna]

I have a junk madison if it has the right can I can pull it and mail it.

Can’t find a parts list but would guess it has to be out of a 148 gtl DX, Richard, or Superstar 360FM. Thank you though.

 

[AudioShockwav]

What PCB number is that radio?
I see PB 010 for cobra148-gtl-dx( late production) Richard, 360fm.
Kens electronics has a lot of coils listed, digging through them for the correct part number is a challenge.
I will go see if there is a part number associated with L-26 on the schematic.

73
Jeff

 

[AudioShockwav]

I am confused, the service manual I have shows L 22,23,24,25,26, and 27 adjust the loop mixer ( 16 MHz vco ) offsets.
But that is for the PC 999 President Grant export.
Have to see what board you have.
73
Jeff

 

[AudioShockwav]

Attached screen shots.
PB 010 top
PC 999 bottom

 

[Big Kahuna]

What PCB number is that radio?
I see PB 010 for cobra148-gtl-dx( late production) Richard, 360fm.
Kens electronics has a lot of coils listed, digging through them for the correct part number is a challenge.
I will go see if there is a part number associated with L-26 on the schematic.

73
Jeff

Yeah it's the PB 010 and the coil is L37 - but I saw it referenced on one DX alignment as L26 and elsewhere as L37. I thought maybe the L26 was the last 148 DX model but that the part would be the same. No service manual for the Richard as far as I can tell so was having to guess based on the Cobra 148 DX ones.

Picture is worth a thousand words Tough to tell in the image as L37 looks like the others but I cleaned out the pieces that fell apart and there's nothing left inside to put a tuning tool into. The other coils were fine so not sure what was up with that one. It almost came apart like beeswax even though it wasn't.

Many thanks for the help.

 

[loosecannon]

if it just broke the top bit of the ferrite off, you should be able to unsolder the can and remove it from the PC board.
then access the slug from the bottom, unscrew it from the can, turn it over, and screw it back in.

the missing ferrite shouldn't change things that much and the can should still peak as normal.
LC

 

[NZ8N]

I concur with LC above. That's what I have always done with a broken tuning slug. Desolder the can, remove from the bottom, flip the slug.

 

[loosecannon]

NZ8N,

but obviously neither of us would EVER do this to cover up the sin of snapping someone else's ferrite!!! LOL
LC

 

[NZ8N]

I din'do nuffin'. I din'see nuffin'.

Or was that "I know nothing!" "I see nothing!" (Schultz)

 

[TM86]

I din'do nuffin'. I din'see nuffin'.

Or was that "I know nothing!" "I see nothing!" (Schultz)

Or go with the Bart Simpson line.

"I didn't do it, nobody saw me do it, you can't prove anything!"

 

[Woody-202]

Yeah it's the PB 010 and the coil is L37 - but I saw it referenced on one DX alignment as L26 and elsewhere as L37. I thought maybe the L26 was the last 148 DX model but that the part would be the same. No service manual for the Richard as far as I can tell so was having to guess based on the Cobra 148 DX ones.

Picture is worth a thousand words Tough to tell in the image as L37 looks like the others but I cleaned out the pieces that fell apart and there's nothing left inside to put a tuning tool into. The other coils were fine so not sure what was up with that one. It almost came apart like beeswax even though it wasn't.

Many thanks for the help.

 

[sunbulls]

After looking at the photo close-up I spotted at least 3 other core tops that are cracked. That typically happens when too much force is used or from an improper sized tool.

 

[Low_Boy]

They say each slug is matched with the coil. I have replaced slugs with different coils and have had good results.