looking for a 5kc jump mod

[sonoma]

I was thinking some one had posted a 5kc jump mod here for a 959 radio with the 69610z board awhile back. if they did I can not find it. any one done this .

 

[sdmahr]

Check cbtricks.com.

I think I remember seeing it there.

 

[Robb]

Maybe wire in a switch and a compression cap on the loop osc xtal?

 

[sp5it]

Don't know is it possible with 8719 PLL.
With MC145106P it can be done.
Mike

 

[CbRadiosPRONTO]

I don't know but what about an open clarifier and more slide? That should be easy enough huh?

Align that freq display real well though. 5 digit counters can make it tough to find the right freq without first tuning somebody in.

 

[sonoma]

a friend is wanting just a 5kc jump for some reason if it can be done with out a big mess. does not want the clarifier mod to slide that much m makes it hard to tune some one in on SSB going that far.

 

[sp5it]

Sonoma, shift tx/rx 5k down can be done.
It is tricky. Can be done 2 ways. Easy (not so good) or hard way.
Easy way is to put some inductance in series with X3....
BUT: when you align radio to get "0" in the same clarifier position in all modes, "5" in every mode will be shifted a little bit.
When you align radio to get "5" in the same clarifier position in all modes, "0" in every mode will be shifted a little bit.
The way I'm doing it is to switch 3 coils connected to X3 - AM/FM, USB, LSB separate. Than you can align the 0 and 5 no prob.
Mike

 

[sonoma]

I am trying to get him to buy a 2950 radio which will do that from the factory. that is what his friends are using. better than trying to mod a radio to do it.
thanks for your info.

 

[hotrod]

I am trying to get him to buy a 2950 radio which will do that from the factory. that is what his friends are using. better than trying to mod a radio to do it.
thanks for your info.

thats best bet. personally for me id just unlock clarifer to go 5kc either way.
thats really not alot considering a 10 turn clarifer will go 1 full channel or 10kc
which i dont care for that much.

 

[9C1Driver]

The Magnum 257, Delta, and Omega can do it easy as well.

 

[sonoma]

6900 board clarifier slide. this is the mod I was looking for, for the jump. it was a slide mod. not sure who did the write up on it. this might work if he does not buy a different radio. thought I would post it here incase some one else might want it.

For what it's worth,,,,I just did this one my Galaxy dx949 I do believe its the same board, and I slide down almost 7 and up just over 5

Remove D68 a 1N4148 diode.
Remove R113 a 47 ohm resistor.
Remove R153 a 2.7K resistor.
Jumper D38 a 1N4148 diode with a jumper wire.
Jumper R114 a 2.2K resistor with a jumper wire.
Run a wire from 8 volts constant to J9 pin F1.
stuck the clarifier on center and did a realignment---works really well///

 

[loosecannon]

sonoma, ive seen that mod before, and was curious if it made the radio more temperature sensitive as far as stability is concerned?

LC

 

[sonoma]

the guy is looking at another radio for now. not sure if it works right or not. if he decides to try it I will let you know. most radios with that much variance on the clarifier is hard to fine tune some one in from what I have ran into in the past. just barely touch the knob and it moves 2 or 3 KC at once.

 

[Captain Kilowatt]

Years ago I had a radio that would slide down about 800 Hz but would slide UP about 8 KHz. It was still easy enough to tune someone in when they were 5 KHz up. That is what EVERYONE did back in the day. It wasn't hard back then but people today just have no idea what is hard and what isn't. I guess that is just the difference between being a radio operator and someone who operates a radio if you catch my drift.