A aviation & planes forum. AviationBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » AviationBanter forum » rec.aviation newsgroups » Owning
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Need help with Narco LORAN LRN 840



 
 
Thread Tools Display Modes
  #11  
Old March 20th 06, 12:40 AM posted to rec.aviation.products,rec.aviation.owning,rec.aviation.ifr
external usenet poster
 
Posts: n/a
Default Need help with Narco LORAN LRN 840

That is your choice and problem, there is no free lunch.


"Benjamin Gawert" wrote in message
...
| Jim Macklin schrieb:
|
| Former cases from the EAA? Are you a member? If not
join?
| It is not restricted to USA only.
|
| I'm not a member, and paying the membership for a ~20yr
old LORAN unit
| is hardly worth it.
|
| Benjamin


  #12  
Old March 20th 06, 04:25 AM posted to rec.aviation.products,rec.aviation.owning,rec.aviation.ifr
external usenet poster
 
Posts: n/a
Default Need help with Narco LORAN LRN 840

Pins A-F: Not used
Pins H-J: GND
Pin K: + LEFT
Pin L: Not used
Pin M: - NAV FLAG
Pin N: Digital data common
Pins 1-6: Not used
Pin 7: + 14/28 VDC power in
Pin 8: Not used
Pin 9: + RIGHT
Pin 10: Not used
Pin 11: + NAV FLAG
Pin 12: Digital data out


Benjamin Gawert wrote:
I got an old NARCO LRN-840 LORAN-C that I want to reanimate. Sadly I
only got the unit itself, no manuals or cables. What I need is a pinout
of the rear card-edge connector and informations about what voltage it
requires etc. If someone has a manual as pdf or any other electronic
format it would be great if he'd mail that to me.

Benjamin


  #13  
Old March 21st 06, 01:30 AM posted to rec.aviation.owning
external usenet poster
 
Posts: n/a
Default Need help with Narco LORAN LRN 840

Narco LRN-840 Pin Out

The connector is double sided.

Looking at the connector the top side is numbered 12 to 1 left to
right.
The bottom side is N to A left to right.

Circuit Pin No.

- Nav Flag M
+ 14/28 VDC Power in 7
+ left K
+ Nav flag 11
+ Right 9
Digital Data Common N
Digital Data Output 12
Power Ground H
Power Ground J

All other pins not used......


  #14  
Old March 21st 06, 01:51 AM posted to rec.aviation.owning
external usenet poster
 
Posts: n/a
Default Need help with Narco LORAN LRN 840

On Mon, 20 Mar 2006 19:30:43 -0500, Russ Haggerty
wrote:

To clarify........This is looking into the Rack side of the connector
you would mate to the unit.........

Narco LRN-840 Pin Out

The connector is double sided.

Looking at the connector the top side is numbered 12 to 1 left to
right.
The bottom side is N to A left to right.

Circuit Pin No.

- Nav Flag M
+ 14/28 VDC Power in 7
+ left K
+ Nav flag 11
+ Right 9
Digital Data Common N
Digital Data Output 12
Power Ground H
Power Ground J

All other pins not used......


  #15  
Old March 21st 06, 03:14 PM posted to rec.aviation.products,rec.aviation.owning,rec.aviation.ifr
external usenet poster
 
Posts: n/a
Default Need help with Narco LORAN LRN 840

What an attitude from someone asking for help, sheesh.

"Benjamin Gawert" wrote in message
...
Dave S schrieb:

Thanks, but that doesn't help me much. I already did a search with
Google but sales ads for aircrafts that have such a LORAN device aren't
really helpful. And buying a manual for a price that is more than this
unit is worth is also not an option.

So if someone out there does have a Narco LRN-840 and a manual please
check out the connector pinout and post it here.

Benjamin


Actually, if you READ those google ads, you may notice that SOME are for
sales relating to the literature that you are looking for, not just
aircraft with them installed.


Well, if YOU had READ my posting you probably would have noticed that I
know that some are selling manuals...

Eastern Avionics, in particular, will likely have what you are looking
for and email you a pinout for less than $20 total. Just in case nobody
happens to have a free copy laying around.

Also check out Ebay, GEBE's Estate Sale.. they have LOTS of old avionics
documentation and I have purchased several items from them in the past.
Again, the price may be quite reasonable (but not free...)


Well, the unit is old and I even don't know if it's working, so 20$ +
shipping + tax (if you look at my email address you might notice that I'm
not in the US) is simply too much just to get the pinout of a few pins.

Benjamin



  #16  
Old March 28th 06, 07:20 PM posted to rec.aviation.products,rec.aviation.owning,rec.aviation.ifr
external usenet poster
 
Posts: n/a
Default Need help with Narco LORAN LRN 840

TxSrv schrieb:

I have an LRN-820, and the pinout may be the same. Looking at the back,
top row of pins (L to R) are 1-12; bottom are A-N. GND is H & J (there
is no I pin). +14/28v is pin 7. Use a multimeter to verify. GND will
be a dead short to the case. Measure +V in to GND: with multimeter set
on high resistance, turning switch on should cause the meter to show an
increasing resistance reading until an electrolytic capacitor fully
charges. Feed in +V thru a 2-3 amp fuse for insurance. Current draw on
the 820 is .5A at 14V; .25A at 28V.


Thank you very much! This was the information I was looking for...

It probably also requires an amplified antenna. Did you get a little
amplifier box which is inserted (near antenna end) in the coax to the
antenna?


Sadly, no, just the base unit. But it's not for use in an airplane any
more but just for the fun of it, so that's not a problem at all.

Thanks again!

Benjamin
  #18  
Old March 28th 06, 07:38 PM posted to rec.aviation.products,rec.aviation.owning,rec.aviation.ifr
external usenet poster
 
Posts: n/a
Default Need help with Narco LORAN LRN 840

Jim Macklin schrieb:

That is your choice and problem, there is no free lunch.


Well, at least two other people seem to think different and have no
problem passing the informations they already have to others that are
looking for it. Thankfully there are still people that do that. Im quite
active in several other groups, and people there also just share the
informations they have. You need a pinout? Just ask, and someone who has
it probably will tell you. Honestly I'm a bit surprised about the "if
you wanna know then go and buy the information" attitude here. Where's
the problem when people that have such an unit lying around or in use or
have the manual just to pass the informations?

I simply just see no reason to sign for a membership that costs much
more than this old unit is worth (and still doesn't gurantee that I get
the informations I need), or to buy a manual for a 20yr old worthless
LORAN unit that is in unknown condition just to get the pinout of the
rear connector, especially since this is just a project for curiosity
and also since LORAN probably isn't that common navigation system any
more so there are dozens of retired units around that have no real value
any more.

YMMV, though. Maybe it's ok for you to buy i.e. a 50$ manual to repair a
20$ radio, but don't expect everyone to do the same.

Benjamin
  #19  
Old March 28th 06, 11:15 PM posted to rec.aviation.products,rec.aviation.owning,rec.aviation.ifr
external usenet poster
 
Posts: n/a
Default Need help with Narco LORAN LRN 840

I understand your desire and appreciate that some people did
have the data you needed. But if they did not have that
data, your choice would be to drop the project or buy the
manual. You could even trace the circuits.

But you asked for a manual or data and I suggested a source
that was valid. You became rude because it was not free.
That is your problem, not mine. If you don't think that an
EAA membership is worth the money just for the magazine and
other functions, and all you'd get is the pin-outs, that is
again, your problem

Have a nice day.


"Benjamin Gawert" wrote in message
...
| Jim Macklin schrieb:
|
| That is your choice and problem, there is no free lunch.
|
| Well, at least two other people seem to think different
and have no
| problem passing the informations they already have to
others that are
| looking for it. Thankfully there are still people that do
that. Im quite
| active in several other groups, and people there also just
share the
| informations they have. You need a pinout? Just ask, and
someone who has
| it probably will tell you. Honestly I'm a bit surprised
about the "if
| you wanna know then go and buy the information" attitude
here. Where's
| the problem when people that have such an unit lying
around or in use or
| have the manual just to pass the informations?
|
| I simply just see no reason to sign for a membership that
costs much
| more than this old unit is worth (and still doesn't
gurantee that I get
| the informations I need), or to buy a manual for a 20yr
old worthless
| LORAN unit that is in unknown condition just to get the
pinout of the
| rear connector, especially since this is just a project
for curiosity
| and also since LORAN probably isn't that common navigation
system any
| more so there are dozens of retired units around that have
no real value
| any more.
|
| YMMV, though. Maybe it's ok for you to buy i.e. a 50$
manual to repair a
| 20$ radio, but don't expect everyone to do the same.
|
| Benjamin


 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
LORAN antenna difference? JFLEISC Home Built 6 December 24th 04 11:10 PM
Narco 120 replacement/TKM 11x of ICOM A200 Jerry Springer Products 1 January 23rd 04 10:07 PM
Narco 120 replacement/TKM 11x of ICOM A200 Jerry Springer Aviation Marketplace 0 January 23rd 04 03:44 AM
Narco 120 replacement/TKM 11x of ICOM A200 Jerry Springer Home Built 0 January 23rd 04 03:43 AM
Narco 120 replacement/TKM 11x of ICOM A200 Jerry Springer Products 0 January 23rd 04 03:43 AM


All times are GMT +1. The time now is 05:04 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 AviationBanter.
The comments are property of their posters.