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The Azden PCS 6000H
This is a 2 meter FM unit, meant for mobile use. It is completely digital (as is most of what is available these days), and puts out fifty watts of power. For the time being, and into the near future, this is my primary 2 meter mobile. The standard PCS-6000 is the same radio, but only puts out 25 watts. There are 21 memories in this unit, all of which can be set for tone and offset. The unit is entirely of metal construction, seems quite rugged, and is compact and good looking. In addition to the 2 meter band, this unit will receive on frequencies from 188 MHz to 174 MHz, giving it some utility as a monitor for air and PB. This was a groundbreaking radio in its day, and introduced many new features and much new technology. The newness of the technology is reflected in the strangeness of the programming and operation. By today's standards, this radio uses a rather odd method of programming. In particular, entering tone information is more difficult than it needs to be. Rather than entering the tone directly via keypad, or perhaps scrolling down a list of tone frequencies, you scroll down a list of tone codes, which have to be looked up in a table to determine their actual frequencies. The most common tone in my area is 127.3 which is tone number 19 on the list.
I had one issue with the radio. The previous owner was involved with CAP and MARS, and had set the unit up for a non-standard frequency step of 12.5KHz. This was not merely a configuration entry, but an actual hardware mod. Setting the unit to standard configuration required disassembly, and the cutting of a pad and diode on one of the circuit boards. This was kind of interesting, and was my first experience with a hardware mod. It certainly made me appreciate all the work that goes into constructing these radios, and the genius it takes to design one. It also filled me with a real respect for those who regularly modify their rigs. The Mod DK site
had instructions on how to make the hardware modification for the
frequency step change, but it was kind of vague about where to find
things, and was actually incorrect on the number of the pad to remove.
DK said it was pad D2, when actually it was pad D208. I snipped it with
a pair of nail Finding the correct diode, I snipped it, and then reassembled everything, still uncertain as to whether I got it right. Upon turning on the radio, I was relieved to hear a beep and see the display light up. I ran through all of the functions, programmed the unit and tested it - everything worked. Thank goodness for the previous owner's sloppy workmanship, or I would have never known where to cut. With my radio operational again, on standard frequency steps, I programmed and then hit all of my favorite repeaters.
The microphone keypad duplicates much of what can be done on the radio's front panel, and also features a tone pad. Buttons on top of the microphone scroll the frequency up or down. The microphone is screwed together, and like the radio. appears solid and nearly indestructible. Even so, I doubt I will be doing anything very complicated with the unit while mobile. As was mentioned before, programming is a bit involved, and not something you want to do while driving. Presently, this
unit spends most of its time in my van, connected to the outside world
through a quarter wave magnet mount antenna. Occasionally I set it up
as The computer control system has all of the usual features, like priority scan. Outside of the memory channels, the radio can be set to scan between preset limits. This makes it a potential air band scanner or VHF police scanner. Standard offset can be quickly configured, when not in memory mode. You can also scroll through the frequencies manually. As a former MARS/CAP radio, this unit has been set up by the previous owner to transmit on 140.100 MHz to 149.995 MHz. Strictly speaking, I will be breaking the law if I transmit outside of 144 MHz - 148 MHz, and there is really no one outside of those frequencies that I want to talk to anyway. Still, its interesting to know that they are there. Its a shame that there is not just a little bit more frequency range. It just misses being able to get on the MURS frequencies. I recall Azden phonograph cartridges and other audio gear from back in the 60s/70s. Apparently, they only entered the amateur market in the seventies, and got out in the nineties. The PCS-6000H was one of the last products they made for amateur radio. Today they are back to making mostly high end audio gear, as well as microphones and wireless units for public events. Its sad to see yet another company get out of ham radio. I watched Radio Shack, Heath, Kachina, Drake Collins, and so many others leave amateur market. Many are still in business, but no longer saw a profit in ham radio, and now do other things. Many others have simply gone out of business.
SPECIFICATIONS GENERAL Frequency Coverage. ……………. AM 118000
135.995MHz (Rx) FM 136.000 173.995MHz (Rx) FM 140.000 149.995MHz (Rx/Tx) Note Specifications guarantee 144 —
148MHz Display ……………………………LCD Frequency Control. ………….…..
.Microcomputer-controlled PLL Emission Type ……………………FM (16F3) Memory Channels…………………20 + 1 Temporary
Memory Power Requirement. ………………13.8V DC ±15%,
negative ground Power Consumption. …………….. 0.6A (receive) 6.OA maximum (transmit...high) Operating Temperature………….. —10 to +50 Antenna Impedance…………….. 50 Ohms Microphone………………………. DT.M F Microphone (U.S. Version) with UP/DOWN, Memory call switch PCM-463A, Dynamic type 500 ohm (European Version) with UP/DOWN. Memory call switch Dimensions………………………...2H X 5 ½ W X 7 ¼ D inch (50H X 140W X 182D mm) Weight……………………………..3 lbs (1 4kg) TRANSM ITTER RF Output Power…………………. 25 watts (high) 5 watts adjustable (low) Modulation System……………….. Variable reactance FM Frequency Deviation………………1-5KHz maximum Spurious Radiation…………………Better than —60dB Offset………………………………±600KHz, programmable PL Tone……………………………Programmable (European Version: 1,750Hz) RECEIVER Receiving System…………………. Double conversion superheterodyne Intermediate Frequency……………16.90MHz (first), 455KHz (second) Sensitivity…………………………. FM: Better than 0.35;V for 20dB NQ AM Better than l.0uV for 10dB S/N FM Better than 0.19uV for 12 DB SINAD Selectivity………………………….± 6KHz or more at 6 dB down ±15KHz or less at 60 dB down Squelch Sensitivity………………… Better than 0.l2uV at threshold Audio Output……………………….2 watts or more (8 Ohm 10% THD) |