I made several short transmissions with 50 watts, The unit operated in this unusually strong RF field with no problems. The automatic transmit power control was tested into several resistive loads representing SWH values starting with 3 to 1. Each test resulted in progressive lowering of the power. The final test consisted of just putting an emergency inch wire in the rear connector and testing on the local repeater.
Plenty of RF was available and the radio did not shut down. First thing I did was put in a five-minute limit. I tested the timer on five minutes with 50 watts and. The radio looked clean on the service monitor and demonstrated a nice IDC instantaneous deviation control circuit which prevented me from over-deviating no matter how hard I yelled into the mike.
Third harmonics in the MHz band were well below 60 dB suppression. Bench-checking the receiver sensitivity was better than the specs of 0. The image rejection specifications call for better than 70 dB.
The receiver reacted very well and responded with just a fettle noise from a local high-power paging unit with the squelch wide open. However it was not enough to break a normal squelch setting.
Checks for desense with an adjacent mobile working on the same repeater were excellent. One of our club members tried running 25 watts in close proximity but still did not cause any desense problems. The amplified RF is then bandpass-filtered again by varactor-tuned resonators to ensure pure in-band input to the 1st mixer. After this was over they conducted the shock test series! The microphone uses a now-industry-standard telephone eight-wire modular plug.
These rugged connectors can be purchased at any telephone supply store and are easy to crimp on. You can now put on a mike connector in 30 seconds instead of spending 30 minutes trying to solder those elusive little tiny wires. The microphone looks complicated and busy, but feels light to the touch. I spent quite a bit of time on the bench trying to get the radio to scan and then finally found the lock switch. But get this: The mike glows in the dark!
Actually, just the buttons glow, but this lighting feature will help make those midnight au-topatch calls a little easier. There are 31 memory channels. I know some of you will scoff and insist that you need at least channels, but for me 31 was fine. All I wanted was a tough simple radio. The names may be up to four characters long. There are provisions for the usual channel scanning or programmed limit scanning, but there are no provisions for storage of telephone numbers.
As is standard in a lot of commercial equipment, this radio can clone program another radio with its stored information via the optional cloning cable.
Once nice feature is that in the event you decide to start over with the memory channels there are provisions for accomplishing a general memory reset to clear all information. Now what? If all else fails go to the operating manual, and indeed the correct picture and instructions were in the manual I did not review the DTMF paging system as our local repeater will not pass DTMF codes, which is quite common in some repeater controller configurations.
If you are into serious bells and whistles you may program a user-ringer melody using up to 16 digits which correspond to notes from the traditional music scale! If you are bored while driving down the highway you can play back the melody with a test sequence.
Personally, I prefer the straight ringing sound which sounds just like a phone. Not only is the microphone lit but you can also adjust the radio panel backlighting on the LCD display to a manual setting or let the photosensor adjust the brilliance of the LCD display The large LCD display is very easy to read. General characteristics HAM bands 2m Frequency stability? Tuning steps? Memories 31 channels in 1 bank s. Receiver system? Image rejection? Audio output?
Electrical Power requirements We do our best to be accurate, but if you've spotted something wrong or incomplete, please let us know! Manuals, diagrams and brochures No documents available for this particular model. New and second-hand prices Estimating the value of a rig can be challenging.
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