President GRANT Classic SSB power

A forum for the discussion of matters of a technical nature. All such activities are undertaken at the readers discretion and own risk. If you don't know what you are doing, don't blame us if it all goes wrong!
User avatar
astradyne
Moderator
Moderator
Posts: 10985
Joined: 14 Jun 2010, 09:28
Location: Dunny On The Wolds
Contact:

Re: President GRANT Classic SSB power

Post by astradyne »

A bit of an old thread this, but it popped up while I was doing a google search on this very issue.

My Grant 1 arrived from France today (PC999AD PCB). It was 40 channels CEPT and 4W max FM/AM and 7W SSB max.

I sorted the channel expansion and removed the resistor from the rear of the RF power VR which gave me up to 16W FM/AM. I've set it to 10W FM/AM.

The problem is the same as Sammy posted. Not very much power on SSB. The resistors are all correct after checking the posted images.

In the time since the last post has anyone solved the riddle?

Also both the fine and course tune seem to be locked, They have no effect whatsoever. There are two wires (orange and white) which are soldered together. One is from the fine tune and the other from the course tune. I snipped them but it made no difference.

Confused! :?

Any ideas?
Never, ever, ever....bloody anything ever!

Far too many radio's to list here. But I do own a legal one...
User avatar
Kaos
Radio Addict
Radio Addict
Posts: 964
Joined: 14 Nov 2007, 06:53

Re: President GRANT Classic SSB power

Post by Kaos »

Image

19W on whistle with mine (SSB that is). Same things missing too.

Board PCB999AB and chip MB8719.

Image
User avatar
cb4ever104
Legend
Legend
Posts: 6551
Joined: 28 Jul 2011, 21:26
Location: Alicante , España

Re: President GRANT Classic SSB power

Post by cb4ever104 »

Check for a little ceramic capacitor on the solder side near the output wire that goes to the so259. Remove it and you'll be back in business. There's another one of my threads on the forum with a photo somewhere.

Sammy
30TM060
Paul aka "Sammy". (108) PY60 Old Paisley DX Group (RIP Rab Markie)
Ex GM0 , now EA5 .
Handle "Fortune Hunter" back in "the day"
Radios ....? Anything that says "TAIWAN R.O.C" on the back.
User avatar
14CS06
Top Poster
Top Poster
Posts: 1794
Joined: 04 Mar 2012, 09:15
Location: JN33LN - ALPES-MARITIMES-06 France

Re: President GRANT Classic SSB power

Post by 14CS06 »

Hello

For exemple

Image

@+
Claude
Photo Collector CB RADIO
User avatar
astradyne
Moderator
Moderator
Posts: 10985
Joined: 14 Jun 2010, 09:28
Location: Dunny On The Wolds
Contact:

Re: President GRANT Classic SSB power

Post by astradyne »

Thanks for the replies chaps. Spotted and removed the ceramic capacitor and all is well on the TX power front.

Now, the fine/course tune. After doing a receive check they are indeed both working fine on RX, but are completely disabled on TX. The two wires I mentioned need to be joined in order to get the RX tune.

There is a loom fitted to the radio which when in position one the radio is mid band only. Position two gives 120 channels. So all is good there. Methinks a little more investigating is afoot!

It's a good condition radio externally (I'll get some pics up on the what have you bought today thread), inside is immaculate. All original components still in place. I've never seen this loom/jumper conversion done before and I think I'll remove it as it looks a bit unsightly.

All thoughts on the fine/course tune will be appreciated...
Never, ever, ever....bloody anything ever!

Far too many radio's to list here. But I do own a legal one...
User avatar
astradyne
Moderator
Moderator
Posts: 10985
Joined: 14 Jun 2010, 09:28
Location: Dunny On The Wolds
Contact:

Re: President GRANT Classic SSB power

Post by astradyne »

Oh and thanks Claude. Always there to save the day with an excellent close up picture.

If only my snaps were as good...
Never, ever, ever....bloody anything ever!

Far too many radio's to list here. But I do own a legal one...
User avatar
astradyne
Moderator
Moderator
Posts: 10985
Joined: 14 Jun 2010, 09:28
Location: Dunny On The Wolds
Contact:

Re: President GRANT Classic SSB power

Post by astradyne »

UPDATE!

I have located where the orange and white wires should be connected on the PCB. Orange is W15 and white is located at R158.

Now I have to dig out my wire box because whoever did this has cut the wires short! :roll:

Hopefully this will be the end of the adventure...
Never, ever, ever....bloody anything ever!

Far too many radio's to list here. But I do own a legal one...
User avatar
14CS06
Top Poster
Top Poster
Posts: 1794
Joined: 04 Mar 2012, 09:15
Location: JN33LN - ALPES-MARITIMES-06 France

Re: President GRANT Classic SSB power

Post by 14CS06 »

Hello

Please look this link

http://bidulman.free.fr/grant2.htm

@+
Claude
Photo Collector CB RADIO
KARACA
Regular
Regular
Posts: 5
Joined: 17 May 2022, 21:35
Call Sign: TA2VW

Re: President GRANT Classic SSB power

Post by KARACA »

presedent grant benim radyoda am ses göndermiyor çıkış var ancak ses yok nedeni ne olabilir

*presedent grant on my radio am not sending sound there is output but no sound what could be the reason*

*Translated for ease of reply.
User avatar
cb4ever104
Legend
Legend
Posts: 6551
Joined: 28 Jul 2011, 21:26
Location: Alicante , España

Re: President GRANT Classic SSB power

Post by cb4ever104 »

No TX audio on AM/FM only , or AM/FM and SSB as well ?
30TM060
Paul aka "Sammy". (108) PY60 Old Paisley DX Group (RIP Rab Markie)
Ex GM0 , now EA5 .
Handle "Fortune Hunter" back in "the day"
Radios ....? Anything that says "TAIWAN R.O.C" on the back.
KARACA
Regular
Regular
Posts: 5
Joined: 17 May 2022, 21:35
Call Sign: TA2VW

Re: President GRANT Classic SSB power

Post by KARACA »

fm okey ssb okey ses gönderiyor ancak am de ses yok göndermiyor dinleme yapıyor
it sends sound but no sound in AM, it doesn't send, listening
Last edited by Buick Mackane on 27 Jun 2022, 17:27, edited 1 time in total.
Reason: Translation
User avatar
Otter
Veteran
Veteran
Posts: 3363
Joined: 04 Apr 2008, 21:42
Call Sign: 26TM439

Re: President GRANT Classic SSB power

Post by Otter »

Does the Grant have the PC-999 board inside it?
"To this day the words Stirling bridge conjour pride in every Scotsman's heart, while to an Englishman those same words conjour literally no feelings at all." - Cunk on Britain S1 E1
KARACA
Regular
Regular
Posts: 5
Joined: 17 May 2022, 21:35
Call Sign: TA2VW

Re: President GRANT Classic SSB power

Post by KARACA »

evet var
User avatar
Otter
Veteran
Veteran
Posts: 3363
Joined: 04 Apr 2008, 21:42
Call Sign: 26TM439

Re: President GRANT Classic SSB power

Post by Otter »

KARACA wrote: 28 Jun 2022, 18:23evet var
?
I have no idea what that means.
"To this day the words Stirling bridge conjour pride in every Scotsman's heart, while to an Englishman those same words conjour literally no feelings at all." - Cunk on Britain S1 E1
User avatar
Otter
Veteran
Veteran
Posts: 3363
Joined: 04 Apr 2008, 21:42
Call Sign: 26TM439

Re: President GRANT Classic SSB power

Post by Otter »

What is the output power on AM
What is the output power on FM
"To this day the words Stirling bridge conjour pride in every Scotsman's heart, while to an Englishman those same words conjour literally no feelings at all." - Cunk on Britain S1 E1
Post Reply