Anyone need them? I've got the set. Pay for shipping and I'll send them to you. Both are in the original binders, these aren't copies or scans. I don't have the exciter anymore, nor do any clients or even potential clients, so they aren't of any use. Would like to see them go to a good home!
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Harris MS-15 manuals
- Thread starter WNTIRadio
- Start date
I pray that no one still has one of those poor bastards in use...
No shit!chriscollins said:
chriscollins said:
I do. It's running on a translator, still putting out the full 20W, too. Other than having to replace the final transistor and the variable voltage regulator once each, it's been pretty trouble free for many years. It is a big heavy son of a gun, though... The translator's on an island in a lake with a 450' long boardwalk going out to it with no handrails. It was a task carrying that beast out there.
I had one take a lightning hit and fry all of the voltage regulators. So +/- 15V became something on the order of +/- 30V and the PA took off from that and burned up as well, as it wasn't designed to do 80 watts!
Still have a client that has a THE-1 (the successor to the MS/MX-15) as a backup on a translator. Heavy as all hell for 55W, but does the job for an aux.
Still have a client that has a THE-1 (the successor to the MS/MX-15) as a backup on a translator. Heavy as all hell for 55W, but does the job for an aux.
An aux? I have two clients that still use the THE-1 as their main. Both are in HT-10 transmitters. Never touched either of them except for cleaning. Guess that makes 'em good.WNTIRadio said:
Have bad MS15 memories. Hot summer, transmitter shack did not have air conditioning, TCXO started drifting, AFC unlocked, off the air, GM angry...
I have a THE-1 at a client's site also. Pretty stable, but it's particular about its load. Run it into a wrong load and it gets a lot of spurious emissions. One thing to note is that the final amp transistors in the M-15, MX-15 and THE-1 are all extinct. If you blow them up, it's no fun finding the replacements. I did find a 2N5xxx transistor that dropped in to the MS-15. It has more gain and a higher output, so the exciter will easily output about 40 Watts, which it really isn't designed to do. As long as the regulators stay good, no problems.
If there are no other takers for the manual, e-mail me off list and I'll take it since I don't actually have the manual. It would be handy to have the schematics and alignment procedures.
If there are no other takers for the manual, e-mail me off list and I'll take it since I don't actually have the manual. It would be handy to have the schematics and alignment procedures.
TomZ said:
Taken with my cellphone from about halfway down the walkway.
http://www.afn.org/~cwerkes/photos/SSPX0245a.jpg
This site houses a 1kW fulltime AM, a 5kW FM, a backup 3kW FM and two translators. The larger transmitters had to be ferried in by boat.
Man I know of a lot of FM’s still using the THE-1 & MX-15 as there main “on air” exciter. The THE-1 is nothing but an MX-15 exciter in a different box with a higher power RF amp.
mp3RadioGuy said:
I know some too... Just don't know any with the MS anymore. I was an unfortunate soul with one of those. While we still use the Harris transmitter, that exciter was replaced long ago. The transmitter is in quite good shape, though. We had a really good engineer one time that worked for us (I am IT). He went out to that site, put us on backup and literally rebuilt that thing for 2 weeks. Undoing all the rigging, etc... that had been done to it over the years. It has been a very reliable box since then.
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