RM KL203 Jumper settings

[Jack327]

Does anyone know the correct jumper settings for the service pins on the rm KL203? It came with the jumper set to pins 1 & 2 but I've been told they should be on pins 2 & 3.

http://www.rmitaly.com/download/manuals/KL203-manual_rel_500.pdf

Appreciate any help...Jack

 

[o8k]

im a moron, but im gonna take a crack at this one anyways just for kicks.

From the schematic, there appears to be some ladder filters driving the circuit that cuts the relay on and off. The jumper position seems to attinuate the amount of filtering going on which drives that transistor switch (activating the relay). My guess is the jumper settings are for different input frequencies (e.g. what carrier frequency is being used 10m vs say 40m). which goes where for what... let me take another guess. L's and C's with those smalll values usually indicate higher frequency stuff. so atinuating those (making them less effective) would seem to be more helpfull at lower frequencies.

Oops hit the submit button too soon:

So position 1-2 would be for high frequency. 2-3 for lower frequency operation. But i would think if the amp is cutting in and out ok the way it is, dont mess w/ it.

I could be totaly wrong. dont take this as gospel. use it more as a problem solving aid.

 

[o8k]

or its the other way round. or im totaly wrong.

 

[TonyV225]

Are you refering to the jumpers for where it operates as far as frequency?

 

[o8k]

Are you refering to the jumpers for where it operates as far as frequency?

Schematic only shows one jumper block. I am speculating its purpose.

So to answer your question, im "guessing" im refering to where it operates as far as frequency. But adding the additional guess that they actually have nothing to do with how the MOSFETS will behave (e.g. Output stage works same regardless of jumper position), only the action of switching on and off of the relay seems to be affected by jumper block.

 

[o8k]

A much more inportant discovery (for me anyways) i am fairly certain of...

I can replace C8 (16v, 33uF) with a higher capacitance to get the SSB delay to last a bit longer (a problem i have with my unit which has made it unuseable in SSB).

 

[TonyV225]

ohh ok if Bob85 shows up Im sure he will know right away what your after and fill you in.

 

[3022]

2 & 3 is correct.

 

[Toll_Free]

Some things get made MUCH harder than they need to be, just so people can see their name in the hall of fame.