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Old September 24th 07, 10:52 AM posted to rec.radio.cb,rec.radio.amateur.equipment,rec.radio.amateur.homebrew
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Default What happened to the SkyWave 2879ABTC?

On Sep 24, 4:35 am, Frank Gilliland
wrote:
I checked the page again thinking maybe it changed, but I still don't
see two diodes. Just one. What two diodes are -you- seeing, Brian?- Hide quoted text -


You're kidding me right?... the external tracking diode (one) and the
base-emitter diode of the power transistor (two). Got it?
www.telstar-electronics.com

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Old September 24th 07, 12:25 PM posted to rec.radio.cb,rec.radio.amateur.equipment,rec.radio.amateur.homebrew
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Default What happened to the SkyWave 2879ABTC?

Telstar Electronics wrote:
On Sep 24, 4:35 am, Frank Gilliland
wrote:
I checked the page again thinking maybe it changed, but I still don't
see two diodes. Just one. What two diodes are -you- seeing, Brian?- Hide quoted text -


You're kidding me right?... the external tracking diode (one) and the
base-emitter diode of the power transistor (two). Got it?
www.telstar-electronics.com

====================================
What a totally useless dialogue on a topic not relevant to this NG

Would you please find another outlet for your egos.

Frank GM0CSZ / KN6WH
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Old September 24th 07, 12:38 PM posted to rec.radio.cb,rec.radio.amateur.equipment,rec.radio.amateur.homebrew
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Default What happened to the SkyWave 2879ABTC?

On Sep 24, 6:25 am, Highland Ham
wrote:
What a totally useless dialogue on a topic not relevant to this NG
Would you please find another outlet for your egos.
Frank GM0CSZ / KN6WH



Hmmm... a discussion about the biasing of an RF amplifier is not
relevant to this NG huh?
Find another outlet for your complaints... lol

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Old September 24th 07, 03:05 PM posted to rec.radio.cb,rec.radio.amateur.equipment,rec.radio.amateur.homebrew
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Default What happened to the SkyWave 2879ABTC?

Telstar Electronics wrote:

On Sep 24, 6:25 am, Highland Ham
wrote:

What a totally useless dialogue on a topic not relevant to this NG
Would you please find another outlet for your egos.
Frank GM0CSZ / KN6WH




Hmmm... a discussion about the biasing of an RF amplifier is not
relevant to this NG huh?
Find another outlet for your complaints... lol

Please quit cross posting this to 'rec.radio.amateur.homebrew';
this _clearly_ is not a homebrewing discussion.

Regards,

Michael
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Old September 24th 07, 04:34 PM posted to rec.radio.cb,rec.radio.amateur.equipment,rec.radio.amateur.homebrew
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Default What happened to the SkyWave 2879ABTC?

msg wrote:

...
Hmmm... a discussion about the biasing of an RF amplifier is not
relevant to this NG huh?
Find another outlet for your complaints... lol

Please quit cross posting this to 'rec.radio.amateur.homebrew';
this _clearly_ is not a homebrewing discussion.

Regards,

Michael


Strange!

Have you guys now taken up knitting and crocheting?

Hmmm. I liked it better when you actually discussed electronic circuits!

JS


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Old September 24th 07, 08:42 PM posted to rec.radio.cb,rec.radio.amateur.equipment,rec.radio.amateur.homebrew
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Default What happened to the SkyWave 2879ABTC?

On Mon, 24 Sep 2007 02:52:47 -0700, Telspam Electronics
wrote in
.com:

On Sep 24, 4:35 am, Frank Gilliland
wrote:
I checked the page again thinking maybe it changed, but I still don't
see two diodes. Just one. What two diodes are -you- seeing, Brian?- Hide quoted text -


You're kidding me right?... the external tracking diode (one) and the
base-emitter diode of the power transistor (two). Got it?



So you claim it doesn't work because one diode will "hog" the current?
Well, that's the point! D1 "hogs" the current and establishes a fixed
voltage for the base of TR1!!! But alas, it only works if your ground
plane is 9 square feet.......

So where's that schematic, Brian?


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Old September 25th 07, 01:43 PM posted to rec.radio.cb,rec.radio.amateur.equipment,rec.radio.amateur.homebrew
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Default What happened to the SkyWave 2879ABTC?

On Sep 24, 2:42 pm, Frank Gilliland
wrote:
So you claim it doesn't work because one diode will "hog" the current?
Well, that's the point! D1 "hogs" the current and establishes a fixed
voltage for the base of TR1!!!


As usual Frank you are missing the important point here. That point
being that you can't simply parallel two diodes... and have them share
currents. This would have to be done in order for any tracking between
the two. The problem is that one diode will always turn on before the
other... and take all current. Now I ask you... where is the sharing/
tracking in that scenario? The answer is: there is no sharing/
tracking... because one diode with the lowest drop will hog the entire
current... and the other diode will be off. this is why the gentleman
on the web page link that YOU provided says it that scheme works like
crap. He's absolutely right!
www.telstar-electronics.com

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Old September 25th 07, 02:42 PM posted to rec.radio.cb,rec.radio.amateur.equipment,rec.radio.amateur.homebrew
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Default What happened to the SkyWave 2879ABTC?

On Tue, 25 Sep 2007 05:43:22 -0700, Telspam Electronics
wrote in
.com:

On Sep 24, 2:42 pm, Frank Gilliland
wrote:
So you claim it doesn't work because one diode will "hog" the current?
Well, that's the point! D1 "hogs" the current and establishes a fixed
voltage for the base of TR1!!!


As usual Frank you are missing the important point here. That point
being that you can't simply parallel two diodes... and have them share
currents. This would have to be done in order for any tracking between
the two. The problem is that one diode will always turn on before the
other... and take all current. Now I ask you... where is the sharing/
tracking in that scenario? The answer is: there is no sharing/
tracking... because one diode with the lowest drop will hog the entire
current... and the other diode will be off.



Amazing. Two major bungles within one month. First you couldn't
recognize a simple voltage multiplier, and now you show that you can't
even understand the basic principle of diode biasing of a transistor.


this is why the gentleman
on the web page link that YOU provided says it that scheme works like
crap. He's absolutely right!



Funny..... he gives a different explanation.

BTW, where's that schematic, Brian?


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Old September 25th 07, 03:08 PM posted to rec.radio.cb,rec.radio.amateur.equipment,rec.radio.amateur.homebrew
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Default What happened to the SkyWave 2879ABTC?

On Sep 25, 8:42 am, Frank Gilliland
wrote:
Amazing. Two major bungles within one month. First you couldn't
recognize a simple voltage multiplier, and now you show that you can't
even understand the basic principle of diode biasing of a transistor.


Frank, again you resort to degrading statements in an attempt to shift
the focus and avoid the topic.
You have suceeded... end of conversation with you.
www.telstar-electronics.com

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Old September 25th 07, 03:40 PM posted to rec.radio.cb,rec.radio.amateur.equipment,rec.radio.amateur.homebrew
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Default What happened to the SkyWave 2879ABTC?

On Tue, 25 Sep 2007 07:08:51 -0700, Telstar Electronics
wrote:

|On Sep 25, 8:42 am, Frank Gilliland
|wrote:
| Amazing. Two major bungles within one month. First you couldn't
| recognize a simple voltage multiplier, and now you show that you can't
| even understand the basic principle of diode biasing of a transistor.
|
|Frank, again you resort to degrading statements in an attempt to shift
|the focus and avoid the topic.
|You have suceeded... end of conversation with you.
|www.telstar-electronics.com
|-------------

No Brian

He is quite on topic. You are failing to comprehend a very simple
basic understanding of the biasing of a transistor.

james


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