#Icom 756 pro ii serial numbers serial numbers#
#Icom 756 pro ii serial numbers serial number#
#Icom 756 pro ii serial numbers manual#
#Icom 756 pro ii serial numbers upgrade#
#Icom 756 pro ii serial numbers full#

This jack has been added directly next to the Receive Antenna Connector. The PRO, and not the 756, has an additional jack, the Transverter Jack.

#Icom 756 pro ii serial numbers manual#

of the PRO Instruction Manual depicts the back panel of the radio.

The PRO appears to have more available microphone input gain, and I can drive it fully with both dynamic and electret condenser elements. I had to use an electret condenser element (or a dynamic element with a pre-amp).

#Icom 756 pro ii serial numbers full#

With the 756, I found it difficult to drive the transmitter to full output with a dynamic microphone element. I have written about ICOM radios and microphones on another page. That information is on another page, and if you have a 756PRO, you might want to check out my S Meter Lite software. Since I made my first comparisons, I have made a closer look at the S Meter. The meter readings are not the result of analog signals changing, they are the result of a numeric computation. The meter itself, which reports several different qualities, is driven from a microprocessor. The meter on the PRO moves more slowly, regardless of AGC speed.įinally, there appears to be no adjustment on either radio for S meter calibration. The S meter on the 756 seems to follow syllables in words, and the dits and dahs of CW. The S meter on the PRO is also what I would call sluggish. Their S meters indicated the same strength for the same test signal. On the other bands, the two radios basically tracked. The difference was about 5 dB on 40 and 15 meters, again the 756 reported a higher value. The mismatch was the greatest on 20 meters, where the 756 read the same signal as 8 dB stronger on its meter. I also found what I call a tracking difference between the two radios. The difference between S1 and S2 may be as little as one decibel or two. Below S8, both meters becomes increasingly more sensitive. Above S9, the meter readings are fairly accurate, which is to say that meter markings track real relative decibel changes. On both radios, the difference between S8 and S9 appears to be 6 dB, a typical value. With two radios it's very easy to compare how each reports signal strength. Still, they are all we have to measure signals, and they are often quoted. S meters are not calibrated against an absolute signal strength reference. I think we have all learned that S meters are, at best, relative signal strength indicators. So, for me, spending the extra money made sense. On top of that, there is the color display and a number of other enhancements. At $100 to $200 (USD) per filter, the cost difference between the radios evaporates. But if there were more slots, it seems as if I would need to add 6 or so filters to be able to get the SSB and CW selectivity choices I would like. Of course this is not even possible because the 756 has a single filter slot at each IF frequency.

#Icom 756 pro ii serial numbers upgrade#

For me, I decided that the upgrade cost made sense because of the equivalent cost of the filters necessary to turn a 756 into a PRO. In fact, given the cost difference between the two radios, I think that both are well worth their respective prices. I really do not want to give the impression that either radio is bad. Sean - K3XT: I can hear these artifacts on my PRO as well.īecause I am comparing two radios here, it may appear as if one is good and one is bad. I decided to replace my ICOM 756 with a 756PRO. W8WWV - ICOM 756 and 756PRO (and PRO II) Greg Ordy.

7-pin DIN plug with Pins 6 (XVRT) and 7 (+12V) bridged via 27KΩ 0.25W resistor, plugged into Pro III ACC (2) socket to activate XVERT mode.Pro III set to 28100.000 kHz, RTTY mode. However, the integration of the latest technology employed in the IC-7800 such as receiver technology, +30dBm class IP3, miniscope makes this new rig the very pinnacle of the IC-756PRO series. The IC-756PROIII incorporates many of the features that made its predecessors so successful. A few of my observations are contained at the end of this page. As of this writing, the radio is still quite new, and comments and observations are just starting to emerge. ICOM introduced the PRO II radio in the second half of 2001. If you have any of your own observations, please email me, and I will add them to the list if appropriate. Additional 756PRO information can be found on the pages maintained by Adam, VA7OJ/AB4OJ, Gary, VE3SOU, WA0SXV, the ICOM reflector (mailing list) at QSL.net, the eHam equipment reviews and of course, the ICOM site. This gave me an opportunity to compare both radios side-by-side. Greg Ordy Last Update: Wednesday, Febru05:59 PM

#Icom 756 pro ii serial numbers serial numbers#

And from what I’ve seen, serial numbers from 0207xxx have the new board. And all 5-digit serial numbers I’ve seen did not originally have the upgrades.

#Icom 756 pro ii serial numbers serial number#

So far, serial number 02021xx is the highest I’ve seen that did not have the factory upgrades.