How do I set up the Hercules II? Very difficult to set this up and not go into OVERDRIVE in the SSB mode and get max output. Speech processor is on. I am using the TT Model 706 mic. Should I get a He
Turn MIC and POWER controls to zero (max CCW). Put Omni into tune position and adjust POWER control to obtain desired output from the Hercules. Un-key TUNE. Key rig again with PTT. Speak into mic (in
Right, Lee - that's exactly how I adjust my OmniVI / HerculesII combination. It's reassuring to know that once you've set the POWER control in TUNE, you can't overdrive the amp. 73, Steve G3TXQ _____
Think I got it now. Porcessor OFF. Adjust Mic gain untill ALC lights on peaks. Turn on Processor Switch Meter to Processor speak into mic untill meter in HEAVY in Black Area. Settings are completely
Jim, If you turn the POWER control on the Omni down low, switch to TUNE, then slowly bring the power up using the POWER control, what's the power output when the OVERDRIVE light first comes on? Steve
Is that 300W out RMS or peak? If it's RMS, you're really pushing it HARD! If it's peak reading meter, you're probably still pushing it. If it's LED's then maybe you have a concern. (I can't recall if
Jim, I second Steve's suggestion below. There are three steps in getting things set up for what you want to do. 1 - Set the maximum power the Omni VI will deliver to the Hercules II. 2 - Set the mic
Hi Lee, Like you, I'm trying to get Jim to tackle this systematically. I think it's worth a first step of checking what power output he gets from the amp on TUNE before the OVERDRIVE LED comes on. If
Do not ignore the OVERDRIVE LED. There is more going on than just an LED coming on. The comparators that turn on the LED also actuate relays that switch in attenuators in the input circuit. You don'
A correction to my previous post: I meant to say: Once the internal collector current metering and forward power metering is calibrated, you can use the internal metering as a reference to adjust the
I followed the steps. I kept speaking into the mic and turned down the power drive on the OMNI VI Plus until the OVERDRIVE led on the Hercules II stopped popping on. That point was 300 watts out on S
1.) Power transistors don't take poundings (at least, not without getting even!) 2.) Have you described how you're reading the power? Peak/RMS, external wattmeter, internal LED power meter, etc? Mete
What do you mean by "300 watts out on SSB"? How are you measuring it? 300 watts indicated by a slow responding D'Arsonval meter movement, could be 500 watts peak. If you can get 450 watts CW from the
I am just using the RF Output LEDs on The Hercules II. Does not really matter, it is not MAX output thats for sure. Instantaneous spikes are being cut off at the 300 watt mark and no OVERDRIVE. Keep
Hi Jim, That 300 watt mark on the bar-graph indicator means nothing if the circuit is not calibrated to a known standard. On the CONTROL BOARD there are three potentiometers that are fed by the forwa
Jim, If you use a Bird 43 on SSB, you'll need to either run tones or use a 43 with the peak reading kit in it. They have a very slow meter response. 73, Duane Duane Calvin, AC5AA Austin, Texas www.ac
Ahhhhhhhh! I think I found it. Swapped cables on either side of the Bird watt meter running between the Hercules II Amp and TT 253 Tuner going to the dummy load with the Bird watt meter between the a
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Sun, 22 Jun 2008 11:27:09 -0600
What you need are TWO Birds. Running them cascaded you will discover that the input Z of a Bird feeding a matched load isn't necessarily a matched load. E.g. the Bird changes the impedance seen. To m
The input Z of a Bird 43 feeding a matched load is also a matched load, as long as we are talking about a 50 ohm impedance system. The input Z of a Bird 43 feeding an unmatched load is an unmatched
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Sun, 22 Jun 2008 17:57:28 -0600
Try two birds in cascade before you are so sure. 73, Jerry, K0CQ _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo