[Collins] {Collins} 30L-1 resistors & etc.

[J. A. Call]

Hello to the List:  Here is  your chance to get some hard to find grid
and parasitic suppressor resistors for your  Collins30L-1 transmitter and
other
items as well..

Item #1. Replace those old tired, burnt out,  out of tolerance grid
resistors with four (4) brand new 47-ohm 1 watt Allen Bradley carbon
composition grid resistors.  Shown on the 30L-1 schematic as R21, R22,
R23, R24.   You should have these as spares in case you develop a grid to
plate short in one or more of your 811A's. These are the ones that
vaporize.  Price is $5.00 for four (4) plus $1.50 FIRST CLASS - USA 
shipping plus $1.30 insurance if desired.

Item #2.  Replace those old tired, burnt out, out of tolerance parasitic 
suppressors in your Collins 30L-1with two (2) new homemade parasitic
suppressors
 using  (2 ) new Allen Bradley 2  watt carbon composition resistors the
values of
which will be either 91 ohms, 100 ohms, 110 ohms, or 120 ohms. The
tolerance of the resistors will be either 5% or 10% which places them all
well within the 25 - 250 ohm value, which is acceptable for parasitic
suppressors, according to ARRL handbooks and  other construction articles
for amateur transmitters.  These are shown as Z1 and Z2 on the 30L-1
schematic. $6.00 for the pair plus $1.50 FIRST CLASS USA shipping 
plus $1.30 if insurance is desired.

Item #3. 1 each  47 ohm 2 watt carbon composition resistor shown as R9 on
the Collins
30L-1 schematic.  Collins changed the value of this resistor from 82 ohms
to 47
ohms in instruction book 523-0122-00 4th edition.  This is the exact
replacement. $2.50 ppd.  

Item #4.  1 each 10K ohm 2 watt carbon composition resistor shown as R15
on  the Collins 30L-1 schematic. This resistor changes values due to
heat.  Exact
replacement. $2.50 ppd.

Item #5. 2  each 10 ohm 2 watt carbon composition resistor shown as R17
and R18 on the Collins 30L-1 schematic. Resistors open up or change value
due to
short on B+ line. $5.00 ppd.

Item #6 1 each  Dale 1 ohm 1% 5 watt wirewound resistor shown as R8 on
the Collins
30L-1 schematic and located on bottom of  B+ resistor string.  Acts as a
meter shunt.  $3.50 ppd.

Item #7.  Replace your old style tube sockets in the Collins 516F-2 AC
power
supply with  genuine ceramic sockets.  These are not the inferior Chinese
replacements
 but genuine 8-pin USA  sockets for the 5U4 and 5R4 tubes  and are made 
by 
Amphenol or Cinch and which has  their name imprinted  in the ceramic.
Has the
 mounting ears for replacement with bolts and nuts or can be mounted in a
hole and
 secured with  the mounting ring. Note:   Will require  enlarging the
chassis mounting 
hole and drilling new holes for the mounting ears.  CCA "The Signal" 
issue number
 twenty five details how this is  done. $12.50 each plus $1.50 shipping.
Combine
 items and reduced shipping charges. Only a few left. 

Item #8.  New Military grade UTC audio output transformer.  Part 
#UTC-F-7101.   Specs - 600 ohm  primary and 8 ohm secondary.  2 watt. 
Frequency response 250-5000hz.  Round potted metal case  1-1/2 inches
high and 1 1/4 inches diameter (same diameter as a flashlight "D" cell). 
Has a diagram and connection pinout on the case.  Useful to add a 
speaker to any of your  Collins or other receivers that have a  600
output.  
$18.00 plus $2.50 shipping in USA. Insurance  $1.30 additional if
desired.

Item #9.  Replacement fuse kit for  Collins 30S-1 or 30L-1.
30L-1  F1 & F2 8A ABC  ceramic fuse.  $2.50 including shipping.
30S-1 F201 AGC 3.2A - F202  12A ABC ceramic - F203 12A ABC ceramic- 
F204 8A ABC ceramic-  F205 1A ABC ceramic.  $4.00  plus
$1.50 shipping.  Total of 7 fuses. Order a kit now and tape it to the
back of
your 30L-1 or 30S-1 so you will have the exact replacement when the time
comes.
Each fuse kit is in its own plastic bag.  Buy both fuse kits for $5.50
plus $1.50 shipping.

J
W7KSG