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#11
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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
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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
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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 |
#14
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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 |
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Need help with Narco LORAN LRN 840
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#16
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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 |
#17
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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 |
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