Ed, I have an old Buxcom cable that I usedmany years ago before I got the the RIGBlaster Advantage. It is a combinationcable the uses the IC746 rear ACC connector and plugs into a sound card line

No. A CW signal (continuous carrier) is much narrower than your 50 Hz wide (or n Hz wide) multiple tone FSK (FT4, FT8, JT9, JT65. etc) signal. The carrier or any of the multiple tone FSK

EXACTLY! I can run 80W on FT8 and my PA temp never goes above 40°C (except on 160M) and my internal fan never comes on. __________ 73, Jim – N4ST

Thanks Martin. I'll try as soon as I can obtain an appropriate plug for ACC1. I have tried adjusting the input gain (many times) to that 30db mark, below and above, with no decodes. There has been a

Would think the duty cycle would not be significantly noticeable. 50 hz and 500 hz are to close to one another.

Hi Dan, You can very easily answer your question yourself. Go into your CONFIG menu and select PA TEMP Then run your CW vs. FT8 experiment The results will be identical 73 Frank W3LPL

But the tone MCW a single tone of 1KHz on a signal dial freq of 14.200 to anyone listening hears a solid carrier tone of 1 Khz in frequency. It is exactly the same power use.

Fellows: Maybe forget about the duty cycle. What I'm really asking is how much power is dissipated ie temp rise of finals if I was to run a 50 HZ tone USB. vs a 500 hz tone? Absolute Power level does

On Thu, Aug 13, 2020 at 02:06 AM, k3dne wrote: Thanks Joe. I'm not using CAT control of the rig (Rig=none in settings). I take audio from the headphone jack of the IC746 into my external sound card

Much of this has to do with the ratings of the gear you are using. In the old days using a transmitter with sweep tubes would get a lot of burnouts, fast. Duty cycle is determined by mode, time and

Actually, think "envelope"! 100 Watts is, in general, 100 Watts! If you have a VOICE SSB signal over 2 kHz, that 100 Watts is spread across that 2 kHz envelope. That is why a 100 Watt CW signal will

You can't talk about Duty Cycle without talking about component temperature. You can run something at 100% duty cycle forever if you can keep the temperature within the ratings of the components. So,

10M Meteor Scatter friends To sum up the results of this activity as documented by PSKreporter: Yesterday morning I did manage to contact G0ORH which is not reported on PSKreporter of today. This

Hi Dan, FT8 is 100% duty cycle during the entire duration of its 12.6 second transmission. FT8 is not USB. Your transceiver is set to USB only so it can translate the FT8 signal generated by your

Dan, Well, no. CW may be produced with a SSB radio. It is an on/off single tone, not actually 100% duty cycle because it is keyed. No "carrier". Digital modes are usually a series of 100% duty cycle

Don't try that on the east coast... The humidity in our air would quickly fill the cooler with water!

But--- a CW signal is 100% carrier. FT8 is USB , little to no carrier. Think AM vs SSB. Dan KC2STA -- Dan Ziolkowski KC2STA SKCC #4290T Ubuntu LINUX

Nope! It is 100% for 13 seconds out of 30... an overall 43% true duty cycle. AND... it will warm up your finals unless you mitigate the extra heat; using extra fans across the PA heat sink/case will

exactly! On 8/13/2020 3:35 PM, Frank Donovan wrote:

Try with on your radio and let us know how it goes...