Return to KLUBNL.PL main page
| To: | "[email protected]" <[email protected]> |
|---|---|
| Subject: | LF: MF: CQ stopped, problems |
| From: | N1BUG <[email protected]> |
| Date: | Tue, 2 Jan 2018 18:37:00 -0500 |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 |
I was forced to stop calling CQ on JT9 at 2320 UT when my PA again
became unstable.
This is the same dual band PA I am having so much trouble with on LF.On MF it will make about twice as much power into the antenna before it has problems. On MF it is much more efficient with the FET running almost cold compared to very warm at half the power level on LF. On MF it takes less power to drive it. In fact with the bias at zero volts I have too much drive. It is OK at first but after several minutes it becomes unstable. Nothing is warm to the touch so I don't know why. I think it is time to give up on this PA and wait until I can try something else. 73, Paul N1BUG FN55mf |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: LF: Si5351A syntehsiser able to fire a FET driver chip directly??, Chris Wilson |
|---|---|
| Next by Date: | Re: LF: Si5351A syntehsiser able to fire a FET driver chip directly??, Chris Wilson |
| Previous by Thread: | LF: 8269.9 kHz EbNaut 02/01/18, Dexter McIntyre W4DEX |
| Next by Thread: | Re: LF: MF: CQ stopped, problems, DK7FC |
| Indexes: | [Date] [Thread] [Top] [All Lists] |