President Lincoln 2 / Plus - RX SSB AGC mod
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President Lincoln 2 / Plus - RX SSB AGC mod
Hi everyone,
are there any updates ref. the well known issue for the bad (warble audio) SSB RX with the new Lincoln 2 / 2 Plus?
Anything that can be fixed with the hidden menu?
Is there a way to upgrade the firmware in order to fix this?
Anything that can be done on the circuit?
President is still ignoring that they sent out thousands of units with a big issue and they simply don't care.
Thanks for anyone that may be able to provide some guidance here.
73, KP235 Steven
are there any updates ref. the well known issue for the bad (warble audio) SSB RX with the new Lincoln 2 / 2 Plus?
Anything that can be fixed with the hidden menu?
Is there a way to upgrade the firmware in order to fix this?
Anything that can be done on the circuit?
President is still ignoring that they sent out thousands of units with a big issue and they simply don't care.
Thanks for anyone that may be able to provide some guidance here.
73, KP235 Steven
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
You’d need a schematic to trace out the AGC circuit
And change some parts. I’ve not got involved with this
Before on these so I couldn’t say what values etc
And change some parts. I’ve not got involved with this
Before on these so I couldn’t say what values etc
Last edited by Edd200sx on 02 Mar 2022, 21:10, edited 1 time in total.
- cb4ever104
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
It amazes me that President , after 45 years in the CB radio business , can pump out radios with these sort of issues
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.
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.
- ch25
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
Just get rid of that junk.
President is not a maker anymore, it is just brand, nothing else.
President is not a maker anymore, it is just brand, nothing else.
WE ARE MOTÖRHEAD, AND WE PLAY ROCK N' ROLL
You can't have too many antennas...
You can't have too many antennas...
- Auldgeek
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
My Lincoln 2+ has no such fault. Sure, the earlier versions, especially the V1 & V2, did have this, but not sure of the + version (some call this a V4)
Auldgeek - Drew
Winner of IBTL Autumn 23 Edition
I've changed radios so many times, I've forgotten what I have
Winner of IBTL Autumn 23 Edition
I've changed radios so many times, I've forgotten what I have
- cb4ever104
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
Apologies. Bad choice of words on my part. After 45 years in the business , President should be able to find a manufacturer who's capable of producing radios without these kinds of issues.
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.
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.
- Auldgeek
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
Can you let us know what version of the Lincoln 2 you are referring to? V1 had awful AGC overshoot. President came up with a dealer modification that required a few components to be changed. At the time, dealers and President fixed this FOC.tcom75 wrote: ↑02 Mar 2022, 11:00 Hi everyone,
are there any updates ref. the well known issue for the bad (warble audio) SSB RX with the new Lincoln 2 / 2 Plus?
Anything that can be fixed with the hidden menu?
Is there a way to upgrade the firmware in order to fix this?
Anything that can be done on the circuit?
President is still ignoring that they sent out thousands of units with a big issue and they simply don't care.
Thanks for anyone that may be able to provide some guidance here.
73, KP235 Steven
V2 implemented these in production from Qixiang. V3 improved a few other shorfalls. The Plus model introduced 12m.
As far as I know, there is "NO" firmware or adjustment from within the engineering menu for this particular issue. Only fixed in hardware.
If you are proficient in SMD work, it's straightforward. The factory modification is available at the link below;
https://simonthewizard.files.wordpress. ... 3-2014.pdf
As mentioned earlier, I have the Lincoln 2 Plus and there's absolutely no sign of any AGC issues (warble) on strong SSB signals.
Auldgeek - Drew
Winner of IBTL Autumn 23 Edition
I've changed radios so many times, I've forgotten what I have
Winner of IBTL Autumn 23 Edition
I've changed radios so many times, I've forgotten what I have
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
Nice I’ve not seen that before. Pretty straightforwardAuldgeek wrote: ↑02 Mar 2022, 20:49Can you let us know what version of the Lincoln 2 you are referring to? V1 had awful AGC overshoot. President came up with a dealer modification that required a few components to be changed. At the time, dealers and President fixed this FOC.tcom75 wrote: ↑02 Mar 2022, 11:00 Hi everyone,
are there any updates ref. the well known issue for the bad (warble audio) SSB RX with the new Lincoln 2 / 2 Plus?
Anything that can be fixed with the hidden menu?
Is there a way to upgrade the firmware in order to fix this?
Anything that can be done on the circuit?
President is still ignoring that they sent out thousands of units with a big issue and they simply don't care.
Thanks for anyone that may be able to provide some guidance here.
73, KP235 Steven
V2 implemented these in production from Qixiang. V3 improved a few other shorfalls. The Plus model introduced 12m.
As far as I know, there is "NO" firmware or adjustment from within the engineering menu for this particular issue. Only fixed in hardware.
If you are proficient in SMD work, it's straightforward. The factory modification is available at the link below;
https://simonthewizard.files.wordpress. ... 3-2014.pdf
As mentioned earlier, I have the Lincoln 2 Plus and there's absolutely no sign of any AGC issues (warble) on strong SSB signals.
To op
If you want and the mod needs doing I do smd work here
I see you’re in Italy maybe not
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
Thank you for the information.
The model I have at present is the 2 plus (II +) also known as V4. And it does have the AGC problem.
I will go for the suggested mod since I can manage SMD work.
Yes I am located in Italy and this is my second Lincon 2 Plus with the same issue.
73, KP235 Steven
The model I have at present is the 2 plus (II +) also known as V4. And it does have the AGC problem.
I will go for the suggested mod since I can manage SMD work.
Yes I am located in Italy and this is my second Lincon 2 Plus with the same issue.
73, KP235 Steven
- Auldgeek
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
Thanks for the clarification. That listed modification is only relevant for V1 & V2 only. However, you may be able to look at the modifications and compare to your own. I certainly do not have this issue, but I have heard many owners of earlier versions who do not have that issue either. It could well be production run specific, although I would have thought that all II+ models would have been fixed.tcom75 wrote: ↑03 Mar 2022, 12:57 Thank you for the information.
The model I have at present is the 2 plus (II +) also known as V4. And it does have the AGC problem.
I will go for the suggested mod since I can manage SMD work.
Yes I am located in Italy and this is my second Lincon 2 Plus with the same issue.
73, KP235 Steven
Good luck
Auldgeek - Drew
Winner of IBTL Autumn 23 Edition
I've changed radios so many times, I've forgotten what I have
Winner of IBTL Autumn 23 Edition
I've changed radios so many times, I've forgotten what I have
- cb4ever104
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
Going back to this . Who actually designs the radio ? I mean do President design the circuit and give it to these Chinese guys to manufacture . Or , do the Chinese manufacture the radio first and then ask suppliers like President etc. if they want to buy them ?
S.
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.
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.
- Auldgeek
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
Hi Sammy, As CRT, KPO, Stryker radios use the same main board, I can't see President designing much of this side. They may have a say in how a radio looks physically, and as the menu is different from say Qixiang in-house branded Anytone, I'd say President will be involved in this. For example, they are the only manufacturer I know that adopts the pyramid style of banding, so that will likely be a Presdient thing.cb4ever104 wrote: ↑03 Mar 2022, 17:02Going back to this . Who actually designs the radio ? I mean do President design the circuit and give it to these Chinese guys to manufacture . Or , do the Chinese manufacture the radio first and then ask suppliers like President etc. if they want to buy them ?
S.
I do know they have a servicing division in France, so I'd expect some input. However, I'm pretty sure that President will have a list of wants, and Qixiang use their board and fabrication to complete the radio at Presidents bequest.
Auldgeek - Drew
Winner of IBTL Autumn 23 Edition
I've changed radios so many times, I've forgotten what I have
Winner of IBTL Autumn 23 Edition
I've changed radios so many times, I've forgotten what I have
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
I might add that if we're talking about other President radios, I think the Grant II is Uniden. I may well be wrong though.
Auldgeek - Drew
Winner of IBTL Autumn 23 Edition
I've changed radios so many times, I've forgotten what I have
Winner of IBTL Autumn 23 Edition
I've changed radios so many times, I've forgotten what I have
- cb4ever104
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
Hi Drew .
Yeah . That makes sense . So each supplier (President , Stryker etc) will buy the request the "main" radio from Qixiang , and then get their own individual quirks made for each brand . I presume that's the way it was done with Uniden/Ranger too . I just wasn't sure who actually came up with the initial design for the initial pcb .
Cheers
Yeah . That makes sense . So each supplier (President , Stryker etc) will buy the request the "main" radio from Qixiang , and then get their own individual quirks made for each brand . I presume that's the way it was done with Uniden/Ranger too . I just wasn't sure who actually came up with the initial design for the initial pcb .
Cheers
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.
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.
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Re: President Lincoln 2 / Plus - RX SSB AGC mod
Indeed all Lincoln 2 have this AGC issues. V2 is a the best version which I still have here. V3 and V4 are more effected with the bad AGC.
The CRT9900 does not have this problems.
The CRT9900 does not have this problems.