[Orion] firmware Questions

[Joe Giacobello]

Gary, that's an interesting piece of information on the mike audio gain. 
Do you know any more the details on this 2nd mike gain adjustment.  I've 
been experiencing some weird behavior on SSB lately myself.  I've pasted 
my original posting below.  I wonder if this second adjustment might be 
involved somehow?

I have successfully used the Studio One and Heil HM-10 mike with the 
Orion.  However, I recently got a bad audio report with the HM-10 
despite the fact that the signal looked clean on my scope.  As a result, 
I started carefully listening to my audio on a second receiver, and 
there does seem to be some kind of low level oscillation and other noise 
with the HM-10.  But I also noticed with both mikes that there is some 
kind of AGC action or compression going on.  (BTW, the speech processor 
is off.)

For instance, when using the Studio One, the audio sounds OK as long as 
I'm speaking, but if I pause for a short time the background noise 
slowly increases to a level that is quite noticeable.  With the HM-10, 
the background noise increases until I hear the oscillation and other 
crud.  It's as if I were using processing.  I haven't received any bad 
audio reports with the Studio One, but I wonder if this compression 
effect is normal or is there something haywire with my setup?

73, Joe




Gary Tuck wrote:

> I've commented on the AGC popping situation here and have found few 
> others who seem to be experiencing the problem.  I know that if I use 
> higher impedance headphones, 64 ohm, it really helps--over my HS-5's  
> even if I put 47-100 ohm resisters in the  audio lines with the 8 ohm 
> cans.
>
> My Sweep does not freeze if I make sure that NR is off in the Sub 
> receiver.
>
> There are two mic gain adjustments.  One is under the transceiver thru 
> a small hole a couple inches back from the front behind the User 
> buttons.  I placed my front panel mic gain at 50 and then adjusted the 
> circuit board pot with a small insulated driver and that helped. Any 
> further adjustment was with the front panel control. Paul in Service 
> told me about this.
>
> When you say transceiver freezing, what are you experiencing?  I know 
> that before I upgraded to 1.372 I had a couple of receiver freezes 
> (either main or sub) and then a couple of times after the upgrade.  I 
> didn't like the audio popping and delays I experienced with BW, Cut 
> and AF so I reinstalled 1.371 after clearing ram and doing a master 
> reset.  Then another master reset after the 1.371 install.  I felt 
> like I was re-formating the drive and re-installing a clean operating 
> system on a fairly new PC.  The receiver freezes have not come back.  
> I was getting transmitter freezes--keying but no power output--after 
> using my Centaur.  Tommy had understood another ham had turned both 
> Keying Loops on and that had helped.  I've been trying that and have 
> not experienced another problem.  Doesn't seem logical and may not be 
> related but it's working so far for me.
>
> I got my Orion September 1st so ours are probably from the same 
> production run.
>
> 73,  Gary W7TEA
>
>
> On Jan 5, 2005, at 10:54 AM, skip wrote:
>
>> I've been reading the mail for a while and also I have made some 
>> comments
>> about the Orion's Firmware problems.  I got my Orion in September or 
>> 2004.
>>
>> The AGC seems to have problems with popping as I think the Agc is 
>> released.
>> Sweep display and transceiver freezing and needs reset
>> I use a Heil Proline mic and cable I purchased from TT and it seems 
>> that the
>> mic gain has to be set at almost 100%
>> Key Clicks @ 20- 30 wpm
>> some other problem but not as bad as the above.
>>
>> Do all Orion's have this ????  I see guy's on the Ten Tec reflector 
>> saying
>> they never had any problem with their radio.  How can this be if it's 
>> in the
>> firmware ?????????
>>
>> de Skip     K3CC
>>
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>
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