WARNING:
This equipment in it's present form is of no use to anyone in Australia ... I am offering this nice little unit for "re-purposing" or just the parts (antenna, off board parts or the case/rack ears)
Why is this gear of no use here in Australia?
This analog receiver is crystal locked (not PLL) at 203.8Mhz (Hi Band VHF) and originally was intended as a diversity (twin antenna) wireless microphone system HOWEVER I seriously doubt that transmitting on 203.8Mhz was EVER legal for those purposes here in Australia. That frequency sits right in the Television channel allocations, around "Channel 9"
HISTORY:
It seems most likely that one of our muso clients bought this to Australia (from USA), I think this gear was intended for use in USA because there is no way that any wireless system on 203.8Mhz would have been approved for use here.
I do have a "belt pack" REDFORD wireless guitar transmitter pack that "talks" to this receiver but as I say above, it is NOT LEGAL to use that Redford belt pack in Australia
So please keep all of this in mind, do NOT go gigging with this receiver and the Redford - it is not allowed! Even if you wish to disregard the law, there is high potential of creating interference to other services or your receiver "hearing" things it shouldn't. Getting a nice contemporary SHURE wireless receiver is a much better thing to do for live gigs.
TELEX USA - VHF Diversity Wireless Receiver
Model: FMR-25TD
Single Channel (Mono)
Unbalanced audio output (1/4" jack socket at the rear)
Frequency is currently fixed at 203.8Mhz (Hi Band VHF)
Dual diversity - meaning there are two antenna ports, the idea is that signal fade from one antenna will hopefully be picked up by the antenna on the opposite side, such as in the case where the artist is moving around the stage area creating a varying transmitted signal strength for the receiver.
Carrier Detected Green LED lights up when the receiver can "hear" the transmitter - there is no signal strength indicator as such, just the "Carrier Detect"
Simple horizontal bar graph is used for the VU meter
Twin RF input connectors type PL259 (Amphenol)
Both antenna use RA Amphenol matching plugs to which is attached the straight metal antenna's (no tip cap)
I am supply this equipment with the 240V 12V @ 600mA unregulated power pack (used for testing) and dual antenna's
DIMENSIONS:
ENCLOSURE: 100mm wide x 43mm height x 175mm depth using 2mm thick tin or "something else" (but it is non-ferrous and doesn't feel like Aluminium)
The enclosure comprises two halves (top & bottom) with a separate front panel and rear panel
RACK EARS (1RU): Aluminium, Black coated. Each ear is 130mm wide x 55mm deep and secured to the case using two heavy duty rivets.
With the equipment in the middle this works out at 306mm wide, a non-standard rack width for sure
ANTENNA: Straight Steel wire (ferrous) 1.5mm diameter x 370mm length
COSMETIC CONDITION:
USED
Solid metal case has no physical damage
Light scratches to the casing but nothing serious
Rack ears are RIVETED to the case, these were custom fitted by the original owner as they had mounted this unit inside a "stage box"
Both antenna are in very good condition
TECHIE STUFF!
Looks to be double sided board, all discrete (through hole) components with no SMD in sight! PCB identification is 70709000 Rev A
On board fuse (holder) for the DC power input
Crystal is soldered to the board, stamped into the top is the frequency 203R800
2x LM393 & LM358, LM392
Motorola 4000 series digital chips 4017, 4572, 4013
Signetics NE614 (twin FM IF stages), NE572 (dual gain control often used in compressors/expanders)
TESTING:
Using the Redford G303 guitar transmitter advertised HERE (this link is not yet active because I have not completed the Redford advertisement), I was able to receive a good solid signal and have an audio signal indicating on the VU meter.
I checked the unbalanced audio output, nice clean output and of a good level
Everything is working as it should (except you MUST NOT use the G303 transmitter here in Australia ... see above)
