However, the only program I could find for the Alinco DJ has been a commercial program written by somebody who sells it through eBay. Those of you who know me personally, know that I am a proponent of open-source software, and barring that, I'm like anybody else and prefer software which is free over software which has a pricetag.
I'm also a computer programmer, and can't see paying for a program which is simple enough for me to write by myself. So, being the hacker that I am, I started playing with the radio's cloning feature, with the cable connected to the computer. After one evening, I have figured out the mechanics of how cloning is done and written programs for my computer to send and receive cloning commands to and from the radio, which allows me to save the radio's settings to the disk.
It's actually rather simple- the cloning process consists of the sending radio transmiting a sequence of commands which contain the data, and the receiving radio processes those commands. Simply saving the commands and then playing them back to the radio is enough to save and restore all of the radio's settings. I have also analyzed the commands- the whole sequence looks like a memory dump, with each line preceded by a command which I believe means "write these bytes to memory".
I don't have any official information from Alinco they don't seem to want to even answer their telephone number in California but assuming that the commands are indeed a memory dump, I believe I have found the location where every setting mentioned in the manual is stored. This text file is what I believe to be a full "memory map" of the unit.
Aging Perform this aging test only when necessary. In the adjustment mode, select channel 17 by rotating the main tuning dial. The transceiver automatically repeaters transmission for a minute and reception for another minute.
Parts No. The signal is then input to pin 2 of the electronic volume IC6 for volume adjustment, and output from pin 1. The adjusted signal is sent to the audio power amplifier IC5 through pin 2 to drive the speaker. Modulator Circuit The audio signal is converted to an electric signal in either the internal or external microphone, and input to the microphone amplifier IC8. IC8 consists of two operational amplifiers; one amplifier pins 5, 6 and 7 is composed of pre-emphasis and IDC circuits and the other pins 1, 2, and 3 is composed of a splatter filter.
The maximum frequency deviation is obtained by VR1 and input to the cathode of the varicap D3 of the VCO, to change the electric capacity in the oscillation circuit. This produces the frequency modulation. The signal is then amplified by the final amplifier Q2 and led to the antenna switch D2 and D5 and low-pass filter L2, L3, L5, C2, C9, C10, C11, C24, and C , where unwanted high harmonic waves are reduced as needed, and the resulting signal is supplied to the antenna.
APC Circuit Part of the transmission power from the low-pass filter is detected by D7, converted to DC, and then amplified by a differential amplifier. The output voltage controls the bias voltage from the source of Q2 and Q4 to maintain the transmission power constant.
Reference Frequency Circuit The reference frequency appropriate for the channel steps is obtained by dividing the When the resulting frequency is 5 kHz, channel steps of 5, 10, 15, 20, 25, 30 and 50 kHz are used.
When it is 6. The phase comparator in the IC2 compares the phase of the frequency from the VCO with that of the comparison frequency, 5 or 6. At the same time, the monitoring tone passes through the AF circuit and is output form the speaker. The tone signal Open navigation menu. Close suggestions Search Search. User Settings. Skip carousel. Carousel Previous.
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This isn't a criticism, and the unit is easily able to fit in a short pocket though it will bulge a bit. It just isn't proportioned the same as so many of today's long slim radios. Much of this is due to the battery pack being nearly half the thickness of the radio.
The little radio puts out 4. Though the radio is not narrow band capable, it does have a This will likely never be a requirement on ; but when narrow band commercial gear comes on the market and is configured for use on this band, it might be a nice feature to have. The original battery is a rather unimpressive mah unit; but a mah version is available. Fortunately, this high capacity battery was included in my purchase.
On the extra capacity battery, the unit can run on receive for a couple of days, before the power gives out. This compares pretty closely to the rated draw of 50 mA on stand by. Enabling battery save mode should double this. You might be able to get by for a day on the standard capacity battery. Even more interesting is a 6 AA cell battery pack. The included battery is a 9. The radio includes a wall charger that takes 12 hours to top off the standard battery, or eighteen hours to completely charge the extended battery.
A drop in rapid charger is available. The 1. Though this may seem like a marketing ploy, there is a reason for the differences in charging time. The wall charger operates through a port on the radio and must pass through the radio's circuitry. Drop in chargers connect directly to charging tabs on the battery. The charging port doubles as a DC input and can accept up to 16 volts.
Like most of today's handhelds, the DJ will pretty much do everything a full sized radio will do, but in a smaller package, and with a lower output. Splits are adjustable from 0 to The unit has memories, as well as 9 programmable DTMF sequences, and the ability to scan the band, selected portions, or memory channels. Memory channels can be named, though the procedure is tedious. All of these features are pretty standard stuff these days; but nice to have.
One dubious feature is the high pitched tone generator which is supposed to act as a mosquito repellent. Being a natural born skeptic, and rather fond of my blood, I have not yet put this feature to the test. There is also a time out timer, and a number of power saving modes. I rarely use power saving features, as they tend to be more trouble than they are worth. I will also likely never use most of the scanning features, though they can be handy sometimes.
Having all of these features on such a small radio does not come without a cost. As with most of today's small and feature filled radios, the cost is in the nature of the controls.
The layout of the controls is a warning that there will be many of the menus that some radio enthusiasts hate, and others swear by. There are two buttons on the antenna side of the radio, one being the PTT, and the other being a monitor button. The other side has only the charger port. There is but a single dial on the top of the unit, and then eighteen keys on the front mounted keypad.
These keys are, very sensibly, slightly recessed to prevent inadvertent activation. Nearly everything on the radio, including adjustment of volume and squelch, requires a function key to be pressed first. In some ways this is a good thing, as it prevents accidental changes in your settings. On the other hand it can make quick operation difficult. Such trade offs are getting to be pretty much the norm these days. Though we have come to accept such things, many of us have never really come to like them.
We all want small radios, and we want them to do everything. Though many radio operators complain about the menus, in order to have all of these features with separate controls, we would need a radio that fit in a backpack rather than a pocket. The radio gets out pretty well, particularly for a handheld. This is part of the secret of the band. This is a huge advantage over the typical 2 meter handheld.
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