I would be cautious about buying off of Amazon or ebay. I purchased a couple of units and they created a lot of RF hash that made reception nearly impossible (I used them in my truck to find power li
I would start by confirming voltages on the A9 board. Also scope them. Then confirm they are getting to the dsp's. As I recall, the v2 mod is a single strap, but don't recall the details. I would foc
I wouldn't worry abt signal path in this case. I would look at cpu data path. The cpu is telling us it can't talk to certain peripherals. We need to figure out why. An old trick: You might want to hi
Check how they are plugged in. On mine the labels should be readable from the back of the radio. If inserted the wrong way the filter is bypassed. Jeff, W4DD
Great, glad that worked. The previous owner of my Orion 2 had all 3 filters in backwards too. I noticed they didn't have any selectivity ! Jeff that was what the problem was filters in backwards. --O
You might want to try and find where the hum is entering the system. I have done this before by using a 1uf cap to ground and touching the cap to the input of each stage. Remember to discharge the ca
Likely many of the Orion 2 owners know this already, but thought it worthwhile to pass it on. There are 2 ways to install Orion filters. On the O1, it doesn't matter since the signal pins are on oppo
Great info guys. One other idea I sometimes use. With the unit off, measure the resistance to ground of similar lines, like the row or column scanning lines. If one is significantly different, maybe
And forgot to mention my favorite tool for any problem that changes over time, a can of freeze mist. Great info guys. One other idea I sometimes use. With the unit off, measure the resistance to grou
As I recall, the initial 4 pole filters from ten tec were not in a metal enclosure but the Inrad filters are. I did not realize that the Inrad filters were not shielded. Thanks for the info. Also, no
Always start by reburning the firmware. I have solved some really odd issues by doing this. Jeff, W4DD It does boot up the latest software version, my problem started with out if band receive on 40 m
If the CPU is the MC68EZ328 (Motorola), I believe it is the 3.3V supply. I bought a couple last year from the seller on ebay and it looks to be an exact replacement although I haven't had a need to t
BTW, received the Orion front panel last weekend. Excellent packing job! Appreciate it. 73's Jeff I also have an Orion 1 secondary receiver hard, two of the small function encoders for Orion, Orion 2
For anyone that needs (or may need someday) a CPU chip (MC68EZ328) for the Orion 1 main board, I ran across this ebay seller. According to the schematic, the MC68EZ328 is what is used on that board.