President RICHARD CEPT to export mode

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cb4ever104
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President RICHARD CEPT to export mode

Post by cb4ever104 » 17 Feb 2015, 19:14

Hi All .

Just in case anyone has the pleasure of doing this mod . Here's what I had to do .

1) Desolder both HI and LOW band wires (violet and grey) from the solder side and place them in their respective holes "MX1" and "MX3" on the pcb side .

2) Remove the resistor soldered onto the ALC VR .

..... and my favourite , which took me a whole 10mins to find .

3) R269 (isn't labelled), which should be 1.5k was replaced with a 5.5k . This causes all sorts of restrictions on the TX line . Both power and frequency tuning .

Anyway , all done now :)

Sammy
Last edited by cb4ever104 on 17 Feb 2015, 21:26, edited 1 time in total.
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Re: President RICHARD CEPT to export mode

Post by Mudslinger » 17 Feb 2015, 20:10

I did this on my one myself.

On mine both the violet and grey wires were soldered together and soldered to the solder side of the board near to the PLL in a rather dodgy fashion. :eh:

The later SS-360 FM's from France are likely to be the same as well I would have though considering they are the same board.
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Re: President RICHARD CEPT to export mode

Post by 14CS06 » 17 Feb 2015, 20:42

cb4ever104 wrote:Hi All .

Just in case anyone has the pleasure of doing this mod . Here's what I had to do .

1) Desolder both HI and LOW band wires (violet and grey) from the component side and place them in their respective holes "MX1" and "MX3" on the pcb side .

2) Remove the resistor soldered onto the ALC VR .

..... and my favourite , which took me a whole 10mins to find .

3) R269 (isn't labelled), which should be 1.5k was replaced with a 5.5k . This causes all sorts of restrictions on the TX line . Both power and frequency tuning .

Anyway , all done now :)

Sammy
Hello Sammy

Mods

Image

Image

R 269 under L 44

Image

@+
Claude
Last edited by 14CS06 on 16 Apr 2018, 11:16, edited 2 times in total.
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Black Spirit
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Re: President RICHARD CEPT to export mode

Post by Black Spirit » 17 Feb 2015, 22:17

You would be surprised how many miss R269 when reversing the modifications and wonder why SSB power is low and sounds distorted.

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Re: President RICHARD CEPT to export mode

Post by cb4ever104 » 18 Feb 2015, 08:18

Also , it makes the whole final stage really narrow .
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Re: President RICHARD CEPT to export mode

Post by cb4ever104 » 18 Feb 2015, 08:20

@Claude .

Thanks mate . I managed to get it done .

Sammy
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Ex GM0 , now EA5 .
Handle "Fortune Hunter" back in "the day"
Radios ....? Anything that says "TAIWAN R.O.C" on the back.

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Re: President RICHARD CEPT to export mode

Post by andrew013 » 17 Mar 2018, 09:55

sorry for bringing this thread up from its sleep but regarding this r269 i have a black fronted richard and you say it should be a 1.5k resistor as they put in a 5.5 k i just checked mine and its a 3.9 k , power wise im happy with 5 watts on am/fm as i dont really use them the ssb power is 12 watts and will go to 15 watts , so should i change r269 to 1.5 or not as it also sounds ok on tx as well , my only bug bear with radio is wont do the zeros as ive said before it has a slide of 3 to the minus and 4 to the plus but if the resisitor is not the right one its a start in putting it back to more cobra ish standards if you know what i mean thanks guys
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Re: President RICHARD CEPT to export mode

Post by cb4ever104 » 17 Mar 2018, 11:26

Hi . I'd change the resistor back to the value God intended (1.5k) . However , that won't fix your slide issue . I must be one of the lucky ones as mine does +/-5khz .

Sammy
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Handle "Fortune Hunter" back in "the day"
Radios ....? Anything that says "TAIWAN R.O.C" on the back.

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