That's exactly what I want to do. Low power using receive type tubes to
start with then go for higher powered building.
Mike
WE0H
Jason Buchanan wrote:
I'm wanting to build a little homebrew project and build bigger ones
based on what I learn from the smaller project. Just wondering if
any
What power level are you thinking about?
What features and what is the modulation scheme?
I have a bunch of older left coast and ARRL handbooks that may have what you
are looking for. I may be able to locate something for you and scan it to
you.
Greg
WA7LYO
Kinston NC
- Original Message ---
I'm wanting to build a little homebrew project and build bigger ones
based on what I learn from the smaller project. Just wondering if
anyone could point me in the right direction for building a nice
little AM transmitter, preferably for use on 160 meters... I guess
I need to find some
Bret:
First let me point out that the centertap of a XFMR does not represent 1/2
of the load resistance but only 1/4. That is to say that if a 2500 ohm near
perfect match is made from the output of a XFMR and the load is to be moved
to the centertap using only 1/2 the winding, the load resistanc
Brett gazdzinski wrote:
But is there any advantage over the 8 ohm to grid
setup?
The disadvantage is a lot of complexity, additional power
supplies, transistors that can fail, heat sinks, etc
A lump of iron is a lot simpler...
If you don't mind the hysteresis loss and subsequent cross-
But is there any advantage over the 8 ohm to grid
setup?
The disadvantage is a lot of complexity, additional power
supplies, transistors that can fail, heat sinks, etc
A lump of iron is a lot simpler...
Brett
N2DTS
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PR
Brett gazdzinski wrote:
Think that circuit is better then a hifi transformer
(say 2500 ohms center tapped) to 8 ohms?
8 ohm side goes to the hifi amp, the 2500 ohm
side goes to the grids.
Swamping resistors go across the 2500 ohm side
(1250 ohms to center tap)
http://www.qsl.net/wa5bxo/drive
A 4D32 is good for about 100 watts of carrier out,
but to get good modulation peaks, they seem to like higher plate
voltages, above 800 volts say.
I am not sure if it's the screen or a lack of peak emission, but
I find if you run them at say 600 volts they just don't make a lot
of positive peaks.
Think that circuit is better then a hifi transformer
(say 2500 ohms center tapped) to 8 ohms?
8 ohm side goes to the hifi amp, the 2500 ohm
side goes to the grids.
Swamping resistors go across the 2500 ohm side
(1250 ohms to center tap)
Brett
N2DTS
> -Original Message-
> From: [EMAIL PR
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