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Hi John:  Thanks for the buffer, I installed it on my 25'x50' 2 levels layout with 800' of GarGraves track, I run my K-line, 3rd Rail, TMCC, Legacy, Vision Line locomotives and they run flawlessly on both levels, going thru two home made aluminum bridges 4' long, no issues at all; the two LED's are On, one is blue and the other one is solid green all the time; thank you Manco (REP) and you, GOOD IMPROVEMENT, just awesome.

Churu posted:

Hi John:  Thanks for the buffer, I installed it on my 25'x50' 2 levels layout with 800' of GarGraves track, I run my K-line, 3rd Rail, TMCC, Legacy, Vision Line locomotives and they run flawlessly on both levels, going thru two home made aluminum bridges 4' long, no issues at all; the two LED's are On, one is blue and the other one is solid green all the time; thank you Manco (REP) and you, GOOD IMPROVEMENT, just awesome.

Churu: That's the news we like to hear. Thanks, cannot wait until I get mine. Ain't it GREAT !!!!

MartyE posted:
cjack posted:

I was thinking to print the schematic and keep it with the the instructions. But I can’t find it, on the forum. Anyone have the link?

Like this?  This version still had the schematic.  John will have to verify if it is still up to date as I see he posted a newer document.

Thanks Marty, note that the schematic from GRJ is the later one with the caps across the opamp power pins. But much appreciated! I'm saving both with the instructions.

cjack posted:
MartyE posted:
cjack posted:

I was thinking to print the schematic and keep it with the the instructions. But I can’t find it, on the forum. Anyone have the link?

Like this?  This version still had the schematic.  John will have to verify if it is still up to date as I see he posted a newer document.

Thanks Marty, note that the schematic from GRJ is the later one with the caps across the opamp power pins. But much appreciated! I'm saving both with the instructions.

Cool. Wasn't sure if it was up to date. Glad he posted. I'll delete mine so as to not to confuse anyone. 

Last edited by MartyE

Just received my buffer today, Great work John.

I hooked it up and found out my Legacy base was bad, only .080 volts base input and 0.100 base output red led. and then hooked up to my cab Legacy and read a 1.140 volts base input and 3.916 volts base output no light on signal level,measured with fluke 87 meter. It look like my legacy is dead.

 

A bunch of them are sitting on the porch for pickup, but they USPS has been somewhat unreliable lately at picking up.  If they don't get them today, I'll drop them at the PO on Tuesday.

75 have been shipped, I'll be shipping the remainder this week.  Of course, there are a handful of people that haven't yet paid the balance, those will rest in the "completed buffers" box for now.

gunrunnerjohn posted:

A bunch of them are sitting on the porch for pickup, but they USPS has been somewhat unreliable lately at picking up.  If they don't get them today, I'll drop them at the PO on Tuesday.

75 have been shipped, I'll be shipping the remainder this week.  Of course, there are a handful of people that haven't yet paid the balance, those will rest in the "completed buffers" box for now.

It's somewhat reassuring to hear I'm not the only one who has been the victim of USPS unreliability.  I was told in email that not 1, not 2, but 3 packages were left on my porch 2 days ago and they were not there when I got home!  Who knows if my booster will even show up this week??!!??

Greg

Jprails posted:

Just received my buffer today, Great work John.

I hooked it up and found out my Legacy base was bad, only .080 volts base input and 0.100 base output red led. and then hooked up to my cab Legacy and read a 1.140 volts base input and 3.916 volts base output no light on signal level,measured with fluke 87 meter. It look like my legacy is dead.

 

The thing to do is measure the base signal at the measurement ports on the buffer.  Remember, the measurements are just a rough guide as converting the 455khz to DC incurs a lot of losses, specifically the diode drops make the lower level signals look worse than they are.  I made readings on a known good Legacy base that was outputting around 5.4 volts of signal, those are what I put in the document.  I also tried to make clear that this is not an absolute reading, and can vary from buffer to buffer based on component tolerances.  There is no calibration of this value, it's really intended to be able to track the performance of an individual command base and buffer over time.

That being said, my experience does suggest that 1.140 volts measured here is probably low for a Legacy command base.

 

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gunrunnerjohn posted:

A bunch of them are sitting on the porch for pickup, but they USPS has been somewhat unreliable lately at picking up.  If they don't get them today, I'll drop them at the PO on Tuesday.

75 have been shipped, I'll be shipping the remainder this week.  Of course, there are a handful of people that haven't yet paid the balance, those will rest in the "completed buffers" box for now.

You should get extra credit for just being able to keep track of all those things and who, where, when, etc. to send them to! 

I measured the voltage at the buffer.The  Cab-1L legacy is the one that works on my layout with the buffer and I have seen an improvement in operation so far it good even with the 1.140 voltage. The legacy is not working at all I guess I will have to send it back again unless it can be fix by someone else. Thanks again for the help in getting my RR running again.  

Jprails posted:

I measured the voltage at the buffer.The  Cab-1L legacy is the one that works on my layout with the buffer and I have seen an improvement in operation so far it good even with the 1.140 voltage. The legacy is not working at all I guess I will have to send it back again unless it can be fix by someone else. Thanks again for the help in getting my RR running again.  

Since the buffer drops the impedance and also boosts the P-P voltage, it'll make even a bad base work much better.  Send the Legacy back to Lionel, they have all the parts and expertise to get it working again.

Are you measuring AC voltage right out of the command base or what?  The voltages I speak of are on the buffer measurement terminals.

martind posted:

John,

   Got mine this morning will hook up this week.  Will let you know how it works,  from the posts of others I am sure it will.   You have done an incredible service for all of us.

Thanks,

  Marty

Thanks Marty.  They worked when they left, and they're not all that shock prone, so I have high hopes that they'll work when they get there!

Currently, everyone that's paid up is either shipped, or sitting on the table behind me with shipping labels attached and waiting for the next mailing day, that should be Tuesday.  I send out an email (or rather USPS does) when I create the label.  That being the case, you're paid up, you should have either received it or gotten a notice that yours is shipping.  If you haven't gotten either, and you think you're paid up, please contact me and we'll sort it out.  I think my accounting is pretty good, but mistakes happen.

gunrunnerjohn posted:

Currently, everyone that's paid up is either shipped, or sitting on the table behind me with shipping labels attached and waiting for the next mailing day, that should be Tuesday.  I send out an email (or rather USPS does) when I create the label.  That being the case, you're paid up, you should have either received it or gotten a notice that yours is shipping.  If you haven't gotten either, and you think you're paid up, please contact me and we'll sort it out.  I think my accounting is pretty good, but mistakes happen.

John I paid for two early this week and have received no notification 

 

    Greg Stack

 

 

 

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