All week a Radio Systems TR6000 Transmitter was on auction at eBay, and as second bidder my offer of $103.00 stood most of the week.
TR6000 is adjustable 0-10 Watts for TIS and carrier current, new models costing above $2,500.
This afternoon in the last hours the bids climbed into the multiple hundreds so I tuned out.
The version shown was an earlier model with controls on the flat wide surface, replaced more recently by a version with controls on the narrow end panel for conserving rack space.
Too bad you lost the bid.
I have one of those 0-20 watt (80 pep) greek transmitters that i got from a member here.
they were all over ebay for a long time and pop up from time to time cheap.
maybe keep an eye out for one of those.
Just a minute Part 15 Engineer...
I've noticed those Greek transmitters and know a guy out east who has one for carrier current.
You obviously like yours, judging from your post, are you operating carrier current or what?
How is it on modulation?
Does it hold up well under normal use?
i haven't run the C-C 24/7 yet. i'm still just experimenting with it. it sounds as good as my procaster though and i did verify the modulation meter is not calibrated very well so it's unreliable but so far i have been quite happy with it. seeing it is rated for 20 rms / 80 pep and we typically run 7 watts (mine is set as low as it will go in power) average pep i don't anticipate the finals going bad anytime soon.
Thank you Part 15 Engineer. This is important for carrier current people because the scarce LPB transmitters are getting old and require a lot of hospital.
The only other transmitter in current U.S. production is the TR6000 from Radio Systems, but 10-Watts is sometimes too little for the needs of carrier current, with 20-Watts being close to ideal.
As you said these Greek transmitters show up on eBay, and somewhere I have the web address for the manufacturer, which I'll post if I can find it.
there is actually 2 or 3 makers. aspisys, www.pll.gr, and one other who brands their transmitters "The Fox". all 3 make them in CQuAM or Mono at varying power level ranges.
your only C-C tuner option is RS CP-15 @ a cost of about $700.00 new
That's an important thing, a carrier current transmitter by itself can't do anything without a coupler.
As just said, the CP-15 from Radio Systems is the only such coupler produced currently, which of course is good.
LPB TCU-30 Couplers still show up on eBay once in awhile.
People have talked about inventing their own couplers but we haven't noticed anyone who actually achieved it.
Working with the AC power line is dangerous, maybe we've had some casualties. We should check up on them.
Here is the websiye for the Greek transmitter I've heard of.
It's the one at the upper left corner (0-20W).
also note they offer CQuAM trransmitters as well.
A friend of mine told me about a pesky requirement that deals with the importaion of non-certifed equipment.
Mr. Druid raises a serious and necessary question regarding importation of non-certified equipment requirements...
We need to discover the alleged "requirements" and explore whether these apply to carrier current transmitters, which are the kind being discussed by yours truly.
Input is being sought until April 10, an arbitrary date.
Certification is required to market a transmitter in the U.S. and although that certification makes most feel all warm and fuzzy about the legality, it's not required to use equipment.
It is specifically stated in the Part 15 rules you can build your own equipment for personal use. Of course they assume you'll make sure it complies so as not to cause interference.
Now on the other hand, the importer/reseller will have a problem if they sell non-certified equipment. Does that mean you are in trouble if you buy it? I'm not sure but I don't think so. It's not like buying stolen equipment.
In Post # 11 Mr. Druid refers to "Certification" of imported equipment.
Yet the FCC link provided by Mr. Druid in Post # 13 speaks to the matter of "FCC Authorization" which is a different category within FCC parlance.
We suggest that Mr. Druid not take legal advice from anonymous friends.