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Re: I¡¯m doing a little survey of people that have rotatable antennas.
Joy, about painting; Any kind of enamel will work to protect the fiberglass rods from UV. Go to OSH and get a big can of their brand spray black enamel. Gloss or flat, your choice; heck you can use
By Cliff Sojourner K6CLS · #9644 ·
Re: I¡¯m doing a little survey of people that have rotatable antennas.
Paul, The way my "MacLogger DX" logging program works is, it gives you a spreadsheet like list of spots from its spot cluster. When I select a spot from this list, it tunes the radio to the selected
By Joy Rabins · #9643 ·
Re: I¡¯m doing a little survey of people that have rotatable antennas.
Joy, Old-school since it went up 30 years ago 73, Eric NF6S ex WD6DBM ?
By Eric · #9642 ·
Re: I¡¯m doing a little survey of people that have rotatable antennas.
I use the makers rotor controllers.? One less cable, plus computer to configure. Besides, the computer logger can't guess what station you are trying to work until you are ready to log the QSO.? On
By Paul AA6PZ · #9641 ·
I¡¯m doing a little survey of people that have rotatable antennas.
Do you just use the controller that comes with the rotor to exclusivity rotate your antenna, or do you add a third party box that allows you to have the computer control your rotor with your logging
By Joy Rabins · #9640 ·
Re: Friday
I plan to be there for lunch but I will have to leave afterwards. Joy
By Joy Rabins · #9639 ·
Even the Martians are feeling it
If you are having problems with the bands, so are the hams on Mars. It appears that even ET8 has been affected. Here is probably the reason. Epic solar storm effects seen by Mars rovers
By HOWARD POMERANTZ · #9638 ·
Friday
I plan to be at the Baylands starting with lunch. Hope to see many of you. Hiroki AH6CY
By Hiroki Kato · #9637 ·
Re: TruSDX FTW
I wouldn't discourage you from adding it. If it shorts, it's easier to replace than a FET, cheaper too. --Jeff [email protected]> wrote:
By Jeff Reagan · #9636 ·
Re: The Joy of Six
I've been in chester the past several weeks, and the blustery winds kept me from putting up antennas.? The road thru lassen is not yet plowed, so no hf or vhf ops for me.?? As Cliff mentioned,
By Eric · #9635 ·
Re: The Joy of Six
Last Saturday during the VHF contest I heard some ops on 2m QSY to 6m, fm, 52.525. so that's 2. Otherwise, yeah all the action is FT8, 50.313. no CW, SSB, AM. Shame, waste of 4MHz. Contest wise, the
By Cliff Sojourner K6CLS · #9634 ·
Re: TruSDX FTW
And can anyone give me a reason not to install the diode?? I'm trying to learn
By Doug Hendricks · #9633 ·
Re: TruSDX FTW
The diode is between drain and source on fet.? Source is ground.can you explain why it works??
By Doug Hendricks · #9632 ·
Re: TruSDX FTW
There are two different mechanisms for reverse breakdown in diodes: zener and avalanche.? Generally diodes with low reverse breakdown are in the zener mode and diodes with higher breakdown voltages
By Paul AA6PZ · #9631 ·
Re: TruSDX FTW
It gets back to the question: is the Avalanche Breakdown characteristic of the FET more delicate than that of a 1 watt zener. Maybe the 1 watt zener is tougher than the FET. Counterintuitive results
By Jeff Reagan · #9630 ·
Re: TruSDX FTW
The zener in the video is connected across the FET, between source and drain. That zener is definitely not subjected to RF AC output voltage. [email protected]> wrote:
By Jeff Reagan · #9629 ·
Re: TruSDX FTW
Doesn't Hiroki's video disprove that?
By Doug Hendricks · #9628 ·
Re: TruSDX FTW
There's another possibility: the zener is so weak, it blows open the instant the transmitter comes on. [email protected]> wrote:
By Jeff Reagan · #9627 ·
Re: TruSDX FTW
Here is an empirical proof to show how a single 1N4756 zener diode actually protects against high SWR. I ordered a bag of 10 1N4756As. I won¡¯t need all of them. Anyone who needs one would be welcome
By Hiroki Kato · #9626 ·
Re: TruSDX FTW
There are pictures of both rigs with diode installed at the beginning of this thread.
By Doug Hendricks · #9625 ·