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4M transverter (requires 10M rf drive)
SPECTRUM 10M TO 4M TRANSVERTER
Why not try 4M (70Mhz), more and more countries are being authorised to use this interesting band. The Transverter comes with a 4M Preamp as well and both are RF switched from the main rig. Fed up with Repeaters 4M is an excellent mobile band.
The unit requires 5-10W Drive at 28Mhz to produce 25W Output on 4M. Here is an extract from the manufacturers Web site, Spectrum is a UK company located in Dorchester.
TRANSVERTERS Early commercial transceivers often had a transverter facility with low level output from the early transmit stages and a means of disabling the power amplifier stage. This meant there were dual connections for an outboard transverter, one from the low drive transmit port and the other for receive using the main antenna socket. Some top of the range rigs still have this feature but most modern rigs don't have any transverter facility. To use them you simply reduce the power output from the rig to as low as possible and use a single connection to the transverter from the antenna socket. The RF sensing in the transverter then looks after RX/TX switching.
Transverters are available to add 4 metres to a rig with 10 metres or with 2 metres. The transverter main board contains an attenuator in the transmit path and can be configured for 1-500mW or 0.5-10W drive levels. Class AB linear operation gives all mode use. The standard product includes a linear amplifier giving panel adjustable output 5 to 20W on 2m, or 5 to 25W on 4 or 6m.. All spurious and harmonic outputs better than 50dB below carrier. Capable of withstanding long periods of transmit into bad SWR. Receive side has panel adjustable gain 0-20dB gain and NF less than 1.5dB. PCB size 150 x 93 x 18mm. Box size 206 x 160 x 77mm. Type TRC4-10 or TRC4-2. Suffix 's' is used for single IF drive arrangement, suffix 'd' is used for dual IF drive version, the suffix 'L' is for the integral linear.
Transverters giving 0.5W output for use with 10 metre or 2metre rig with a single connection and 0.5-10W drive. Types TRC4-10s, TRC4-6s, and TRC4-2s.Also a Transverter giving 0.5W output for use with a 10 metre rig with dual transverter connection and 1mW-500mW drive, type TRC4-10d.
UK prices by any method, PCB Kit 60.00, PCB built 92.50, Box kit 101.00, Boxed built 148.00. Rest of Europe by any method, PCB kit 62.50, PCB built 94.50, Box kit 106.00, Box built 153.00.
Transverters giving 25W output for use with 10 metre or 2 metre rig with a single connection and 0.5-10W drive, types TRC4-10sL, TRC4-6sL, and TRC4-2sL. Transverters giving 25W output for use with a 10 metre rig with dual transverter connection and 1mW-500mW drive, type TRC4-10dL.
Have a look at their Web Site as well for more information:
http://www.spectrumcomms.co.uk/
