[Boatanchors] More Ranger

[Richard Knoppow]

    Is it possible that you don't have all the fragments, perhaps the 
value is some other combination that has those numbers. Silver means 10% 
so it could be something other than 0.51 ohms.
    Its not unusual for some manufacturers to make changes that are not 
documented. Hallicrafters is one and there are others.
     If the transmitter is inoperative you should be able to find what 
is wrong. Such a small value sounds like a damper (wrong term) sometimes 
found in the grids of tubes to prevent parasitic oscillation. If its one 
of those the thing could well be dead in the water.

On 5/21/2024 4:51 PM, Lawrence Godek wrote:
> For those following this thread and did not see some of the things i 
> said, here is some more info.
> 
> I had been using the transmitter with regularity, no idea why all of a 
> sudden it would make a big flash and then quit.  However when i turn the 
> transmitter from off to the Tune position, all the filaments light as 
> normal but there is a missing sound and action.  When i turn the switch 
> to Am or Phone and CW the small red lamp on the front panel lights up 
> but nothing else happens.
> 
> In looking around a i found 3 pieces of a resistor, green/brown/silver 
> which means it it 67 ohms divided by 100.  well i don't have any 
> resistors like that shown on the parts list. However on the backside of 
> the back wafer on that switch there is another resistor of identical 
> value.  There are only two shunts with a value close to that and they 
> are listed as .51 ohms
> 
> It would appear that as these transmitters went along in their 
> development changes in some values were made bu documentation did not 
> follow up.  I am wondering that with all the rangers built that are 
> still around if there isn't someone out there with perhaps a manual 
> reflecting these changes.
> 
> Needless to say if i can't find where this resistor blew up it's gonna 
> be difficult to fix this rig.  I don't see anything anyplace that has 
> the remenents of that resistor not even the wire stubs that were 
> soldered to something.
> 
> A challenge indeed.
> 
> Larry W0OGH

-- 
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998