[Repeater-Builder] Source of Coil Slugs

2009-12-15 Thread wb6dgn
I'm trying to modify a commercial boat anchor from 42 - 50 Mc. up to the 6 
meter ham band.  Not even one coil in the RF preselector and 1st 
oscillator/multiplier chain will tune into the ham band, which is very unusual 
for this radio.  There are just too many tuned circuits to consider removing 
coil windings or changing capacitors so I want to try using brass or aluminum 
coil slugs in place of the powdered iron ones now used.  Does anyone know of a 
source for these slugs?  I can mic. the slug diameter and guestimate the thread 
pitch if anyone has any suggestions.  TIA for any/all help.
Tom DGN 



Re: [Repeater-Builder] Source of Coil Slugs

2009-12-15 Thread JOHN MACKEY
What model of radio are you working with here?

-- Original Message --
Received: Tue, 15 Dec 2009 08:47:06 PM PST
From: wb6dgn tallins...@yahoo.com
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Source of Coil Slugs

 I'm trying to modify a commercial boat anchor from 42 - 50 Mc. up to the 6
meter ham band.  Not even one coil in the RF preselector and 1st
oscillator/multiplier chain will tune into the ham band, which is very unusual
for this radio.  There are just too many tuned circuits to consider removing
coil windings or changing capacitors so I want to try using brass or aluminum
coil slugs in place of the powdered iron ones now used.  Does anyone know of a
source for these slugs?  I can mic. the slug diameter and guestimate the
thread pitch if anyone has any suggestions.  TIA for any/all help.
 Tom DGN 
 
 





RE: [Repeater-Builder] Source of Coil Slugs

2009-12-15 Thread Eric Lemmon
Tom,

If you identify the make and model of the radio, perhaps someone who has
gone this route before can comment.  Otherwise, carefully remove one of the
slugs and take it to a good hardware store where you can use a thread gauge
to identify the thread diameter and pitch.  With luck, that store may have
machine screws in brass and aluminum that can be trimmed to make the proper
slugs.

73, Eric Lemmon WB6FLY


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of wb6dgn
Sent: Tuesday, December 15, 2009 8:46 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Source of Coil Slugs

  

I'm trying to modify a commercial boat anchor from 42 - 50 Mc. up to the 6
meter ham band. Not even one coil in the RF preselector and 1st
oscillator/multiplier chain will tune into the ham band, which is very
unusual for this radio. There are just too many tuned circuits to consider
removing coil windings or changing capacitors so I want to try using brass
or aluminum coil slugs in place of the powdered iron ones now used. Does
anyone know of a source for these slugs? I can mic. the slug diameter and
guestimate the thread pitch if anyone has any suggestions. TIA for any/all
help.
Tom DGN