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Looking for schematic for Pilot Communications model 1650 am transmitter
- Thread starter BROADCAST
- Start date
Good Luck 
The best you can do is check the OET Certification at FCC.gov and see if they have the schematics posted.
most, if not all manufacturers of part 15 am transmitters that operate via part 15.219 for some reason are extremely anal retentive about giving out schematics and test data.
The best you can do is check the OET Certification at FCC.gov and see if they have the schematics posted.
most, if not all manufacturers of part 15 am transmitters that operate via part 15.219 for some reason are extremely anal retentive about giving out schematics and test data.
W
WCWalker
Guest
The reason most manufacturers of these devices don't want to freely hand out schematics to their equipment is that many contain proprietary designs and/or components.
I checked the OET Certification but no joy. :
If i had the time i would pull the pcb out and make the schematic from it,but it would be easier to scope the board with a schematic!
I have been slowly repairing my rather large pile of faulty items,and now this has come to the top of the heap!
If i had the time i would pull the pcb out and make the schematic from it,but it would be easier to scope the board with a schematic!
I have been slowly repairing my rather large pile of faulty items,and now this has come to the top of the heap!
William C. Walker said:
that's no excuse. that's what patents are for. they can hand out the schematics and if someone markets a tx with their propeitary design then they can sue.
there is absolutely no reason they can't include schematics.
W
WCWalker
Guest
Apparently you don't understand how business operates. If you owned a restaurant and had a reputation for producing the best dish of its type in your area, would you freely hand over the recipe i.e. ingredients to anyone that asked? I think not.
apples and oranges. $100.00 plate of food vs. $1000.00 peice of electronics. can't patent the food, but you can the schematic.
whats your point?
whats your point?
W
WCWalker
Guest
My point is simple. When you purchase a transmitter or piece of electronics equipment from somewhere, the manufacturer of that device is under no obligation to provide a schematic to the purchaser. They don't owe you anything other than what is listed in the purchase agreement. And the previous analogy was clear and to the point and effectively illustrates why businesses don't simply hand out information that can potentially damage their business.
Personally, I would not and will not release again any information to the public or even a customer if I believe it could come back to haunt me later on down the road. I used to do that but thanks to a few bad eggs in the community radio world who took advantage of me, I will no longer allow myself to be used in that manner.
Personally, I would not and will not release again any information to the public or even a customer if I believe it could come back to haunt me later on down the road. I used to do that but thanks to a few bad eggs in the community radio world who took advantage of me, I will no longer allow myself to be used in that manner.
well without manufacturers publishing their data, and an unwillingness by people in the Part 15 Community to stand up against BMI, manufacturers who are unwilling to publish test data and schematics which could help the consumer a lot and help defend against the ground issue, then i see a very grim future for the part 15 movement
this unwillingness is why we have the laws we have today and ever continuing decline of freedom. every one has been turned into sheeple and just be happy with what little tidbits industry and government decides they want for us.
our for fathers must be spinning in their graves.
this unwillingness is why we have the laws we have today and ever continuing decline of freedom. every one has been turned into sheeple and just be happy with what little tidbits industry and government decides they want for us.
our for fathers must be spinning in their graves.
W
WCWalker
Guest
I don't see the correlation between manufacturer's not publishing their data and the rest of your statement. And the ground issue is a separate issue altogether because the length of the ground and how it is interpreted by various FCC Field Offices is likely always to be a grey area. Keith Hamilton has been in touch with the FCC concerning the ground issue and it does seem that DC is leaving it up to each Field Office to decide what is and is not acceptable.
However, I do agree with every other point you've made. At least ASCAP is not actively pursuing money from part 15 operations.
However, I do agree with every other point you've made. At least ASCAP is not actively pursuing money from part 15 operations.
Well the hamilton which is the one we have seen NOV, and NOUO for lately for long ground leads is the prime example.
the way in which it was certified can go a long way in proving to the FCC feild agents that we are using it in the maner to which it was certified.
i've heard rumors that the hamilton was certified 6ft of the ground with a long ground lead going to earth ground.
if that fact was ever proven it would throw a rather large monkey wrench in the FCC claims, however it's a double edge sword. If it's proven to be the other way around hamilton would be the one hurting in the pocketbook.
as far as schematic? we see these old transmitters popping up on ebay from defunked manufacturers. some need repair some don't. some people may want to mod them for other uses. without a schematic it's very hard to trouble shoot something. what if i want to see if the thing is worth the money before i sink $1k+ into it?
all manufactures of broadcast gear include schematics of their equipment. you would think they would be worried to death about trade secrets.
it's all hooey. it's nothing but secretism and paranoia.
the way in which it was certified can go a long way in proving to the FCC feild agents that we are using it in the maner to which it was certified.
i've heard rumors that the hamilton was certified 6ft of the ground with a long ground lead going to earth ground.
if that fact was ever proven it would throw a rather large monkey wrench in the FCC claims, however it's a double edge sword. If it's proven to be the other way around hamilton would be the one hurting in the pocketbook.
as far as schematic? we see these old transmitters popping up on ebay from defunked manufacturers. some need repair some don't. some people may want to mod them for other uses. without a schematic it's very hard to trouble shoot something. what if i want to see if the thing is worth the money before i sink $1k+ into it?
all manufactures of broadcast gear include schematics of their equipment. you would think they would be worried to death about trade secrets.
it's all hooey. it's nothing but secretism and paranoia.
W
WCWalker
Guest
Why not dispel all those rumors by contacting Keith Hamilton to ask him how the unit was grounded and setup when it was certified.
Good companies will be happy to support thei product. However if they are gone, this is another matter.
You might try a local station engineer or ham to help you fix your device. 100 mw am transmitters are
very simple circuits. Not much too them. The real secret to getting some range with one tenth watt
is in the antenna design.
Just thought you deserved a straight answer. I'm not selling anything.
You might try a local station engineer or ham to help you fix your device. 100 mw am transmitters are
very simple circuits. Not much too them. The real secret to getting some range with one tenth watt
is in the antenna design.
Just thought you deserved a straight answer. I'm not selling anything.
Timewarp said:
As i repair and calibrate various broadcast equipment i could repair it no problem,it's just a pain to pull the pcb out and spend time drawing out the schematic by tracking all the pcb connections.
If i had the schematic i could just scope it through quickly and sort the problem out.
As it is hardly the top of my list of priorities,it will be put on the back burner or scrapped.
Just thinking,may be a good section for this board would be a schematics area!
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