Lincoln mic problems

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

Re: Lincoln mic problems

Post by Otter »

13EL121 wrote: 16 Oct 2020, 18:00 Had a few dead Lincoln microphones over the years. The element was always faulty. Seems to be normal. I modified them to electret microphones. Works better than before.
I had one that was modified to electret, but the currebt that was drawn from the Up or down button connection meant it sometimes changed channel just because it felt like it. If you have a schematic for a reliable modification it would be really useful.
"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
ch25
Top Poster
Top Poster
Posts: 1673
Joined: 03 Dec 2016, 11:07
Call Sign: Lemmy
Location: Poland

Re: Lincoln mic problems

Post by ch25 »

That's a way to do it.
linc-electret.png
Chris
You do not have the required permissions to view the files attached to this post.
WE ARE MOTÖRHEAD, AND WE PLAY ROCK N' ROLL
You can't have too many antennas...
John555
Super Member
Super Member
Posts: 111
Joined: 23 Jul 2020, 18:12

Re: Lincoln mic problems

Post by John555 »

Thread revival ! After poking about inside my Lincoln after discovering it has no tx audio i decided to put a scope on the mic - bang mic is at fault...

How on earth does the mic come appart ? Is there a hidden screw or clip somewhere other than the 3 on the back I cant see? I'm resisting the intention to prize the bas#### open with the big screwdriver but not sure how long I'll hold out!
User avatar
13EL121
Radio Addict
Radio Addict
Posts: 618
Joined: 16 Sep 2008, 20:55
Call Sign: 13DA121
Location: Germany
Contact:

Re: Lincoln mic problems

Post by 13EL121 »

No, the original Mic is no magic to crack it open. Maybe someone has fixed it with super glue? The original mic capsules seems to die all one by one. Had a lot of dead capsules in the last years.
User avatar
14CS06
Top Poster
Top Poster
Posts: 1794
Joined: 04 Mar 2012, 09:15
Location: JN33LN - ALPES-MARITIMES-06 France

Re: Lincoln mic problems

Post by 14CS06 »

Hello

only the 3 screws at the back

Image

Image

Image

@+
Claude
Photo Collector CB RADIO
The Collector
Legend
Legend
Posts: 8666
Joined: 23 Jan 2010, 19:26
Location: Bristol-ish

Re: Lincoln mic problems

Post by The Collector »

If the screw "posts" have been stripped or been snapped due to overtightening, then glue has been used in the past to keep the two halves together. You can try a Stanley knife and repeatedly run the blade along the crack. This might cut through a thin layer of glue.

However, if they've gone overboard with the UHU or superglue, then you may need to use a thin, flat blade to try and gently prise it apart.

If they've used loads of plastic cement (as used on Airfix planes), you're probably going to have to cause a bit of damage I'm afraid.
User avatar
ch25
Top Poster
Top Poster
Posts: 1673
Joined: 03 Dec 2016, 11:07
Call Sign: Lemmy
Location: Poland

Re: Lincoln mic problems

Post by ch25 »

13EL121 wrote: 26 Jan 2022, 16:20 No, the original Mic is no magic to crack it open. Maybe someone has fixed it with super glue? The original mic capsules seems to die all one by one. Had a lot of dead capsules in the last years.
Convert to electret. Win-win situation.
WE ARE MOTÖRHEAD, AND WE PLAY ROCK N' ROLL
You can't have too many antennas...
User avatar
Otter
Veteran
Veteran
Posts: 3363
Joined: 04 Apr 2008, 21:42
Call Sign: 26TM439

Re: Lincoln mic problems

Post by Otter »

ch25 wrote: 17 Oct 2020, 15:19 That's a way to do it.
linc-electret.png
Chris
I'm sorry I didn't see this earlier. Thank you for posting 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
User avatar
13EL121
Radio Addict
Radio Addict
Posts: 618
Joined: 16 Sep 2008, 20:55
Call Sign: 13DA121
Location: Germany
Contact:

Re: Lincoln mic problems

Post by 13EL121 »

ch25 wrote: 26 Jan 2022, 18:05
13EL121 wrote: 26 Jan 2022, 16:20 No, the original Mic is no magic to crack it open. Maybe someone has fixed it with super glue? The original mic capsules seems to die all one by one. Had a lot of dead capsules in the last years.
Convert to electret. Win-win situation.
That's what I always do. 😉
John555
Super Member
Super Member
Posts: 111
Joined: 23 Jul 2020, 18:12

Re: Lincoln mic problems

Post by John555 »

Thanks all, yes expect it has been glued at some stage then. ill be as careful as I can and prize it open. Its dead as it is so nothing to loose I guess. Will report on progress!
John555
Super Member
Super Member
Posts: 111
Joined: 23 Jul 2020, 18:12

Re: Lincoln mic problems

Post by John555 »

cheers all, prized it open and the mic insert is indeed dead. are replacements available at all? done a quick google and they are all electret inserts listed on the 'bay. ta
User avatar
14CS06
Top Poster
Top Poster
Posts: 1794
Joined: 04 Mar 2012, 09:15
Location: JN33LN - ALPES-MARITIMES-06 France

Re: Lincoln mic problems

Post by 14CS06 »

Photo Collector CB RADIO
User avatar
13EL121
Radio Addict
Radio Addict
Posts: 618
Joined: 16 Sep 2008, 20:55
Call Sign: 13DA121
Location: Germany
Contact:

Re: Lincoln mic problems

Post by 13EL121 »

An electret is cheaper and sounds better than the dynamic ones.
John555
Super Member
Super Member
Posts: 111
Joined: 23 Jul 2020, 18:12

Re: Lincoln mic problems

Post by John555 »

Thanks Claude!

electret conversion would be good but i like to swap mics on this radio as it goes out mobile some times so will stick with the dynamic
cheers all
User avatar
cb4ever104
Legend
Legend
Posts: 6551
Joined: 28 Jul 2011, 21:26
Location: Alicante , España

Re: Lincoln mic problems

Post by cb4ever104 »

John555 wrote: 16 Feb 2022, 14:21 Thanks Claude!

electret conversion would be good but i like to swap mics on this radio as it goes out mobile some times so will stick with the dynamic
cheers all
You can still use standard dynamic mics on the radio after the conversion. The electret mic can only be used on the radio , unless the other radios have been modified accordingly.
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.
Post Reply