I’m wondering if there is any european service, repair station for NAV401L ?
I’m also not sure if this one can generate parallel LOC and GS..— – it can. However its possible to repair it in eu?
Przemek wrote:
If case of G5 – if I will generate GS w/o LOC it will display it?
G5 does not receive analogue NAV signals, it receives information from the nav box via RS-232 or ARINC 429. I can try sending various RS-232 packets to my G5, but please bear with me, it won’t be right away.
How are you happy with quality of unit?
Absolutely.
Isn’t a NAV401 really ancient?
Hi. G5 does receive digital’s but from nav radio that is getting analog signals from nav antenna.
I need to test after installation if vor/loc/gs is working and properly coupling with autopilot. For that I need to generate analog signals in radio frequency.
I’m thinking about this vintabe NAV401L, its big and vintage but makes VLOC and GS at one time. AV-17 looks also interesting as I could test transponders but no loc+gs… :/
I’m wondering now if there is any option to get NAV401L repaired in case of fail or calibrated… best in EU
Peter wrote:
Isn’t a NAV401 really ancient?
It is but pricing seems to be acceptable. All analog, big etc… but maybe it will make a job. Question is if there is any resonable support for that.
I was working on IFR4000 and 6000 – awesome units. You don’t need anything else and tests are full automatic… but for small company way too expensive.
There are at least 2 UK companies that service/repair and calibrate NAV401L and the NAV402AP which is similar but has some additional autopilot features for automatically sweeping the LOC and GS deviation.
I still use a 401L and it’s simpler than the IFR4000 but does everything you need.
wigglyamp wrote:
There are at least 2 UK companies that service/repair and calibrate NAV401L and the NAV402AP which is similar but has some additional autopilot features for automatically sweeping the LOC and GS deviation.
I still use a 401L and it’s simpler than the IFR4000 but does everything you need.
Do you know prices of annual check of 401?
Hi. I did research and I got just for a few euro used nav-401l marked as “defective”. Interesting and risky but for funny money maybe it worth.
Can anyone share users manual and diagrams of that unit? I will get it next days but w/o documents. Maybe its just power supply or battery defect… worth to take a look.
So. 3 hours of work and power supply block repaired.
Without diagrams…
Seems that its working except vor xtal and com xtal modex…
If anyone could have maitenance manual for it – would be great!
I’m kind of surprised that no one in the homebuilt/experimental scene has built an SDR based avionics tester, based on something like the LimeSDR or Ettus USRP.
