Forgot the link to Array Solutions
RF Limiter / Front Load Protector (Helps to know what they call these
items so you can search for them :-) i.e.. Front End Protector.
http://arraysolutions.com/Products/as_rxfep.htm
That's a terrible protection system. It would deteriorate almost any
It sounds like the DX and MFJ are out because of Watt limitations (200W?).
You are misinterpreting the ratings.
The ratings are for power from the transceiver sent out THROUGH the device,
not transmitter power to some other system not directly connected to the
device.
The switches go
By the way Buck, there is more to this than some people will tell you.
The DXE switch uses a unique RF limiter that kicks in hard at about 23 dBm.
Below that level there is no intermod at all!! It will not deteriorate the
receiver, like normal cheap back-to-back diode systems.
If you need a
According to the PT0S website, there are 9964 QSOs in the Database - Last QSOs
in the Database: 1057 UTC 14 November 2012
73,
Bob/AA6VB
___
Topband reflector - topband@contesting.com
Getting away from what we are discussing now (limiters) and back to the
original question... it really is just a few bucks for a relay for a rig
(without separate T and R jacks) at the 100W level, to add separate T and R
based on the amp key line.
It's ironic that for most of half a century,
Wonder if someone can help with a technical question with the amp I use on 160
meters.
The Spec Sheet for the 8877 tube lists the Absolute Maximum Plate Voltage of
4000 Volts for the tube, and also says in typical operation the plate
voltage is between 2700 and 3500 volts. In my amp (Ameritron
Bob and Paul, The 8877 has a 5 volt filament. The 3CPX1500A7 has a 5.5 volt
filament. Many have been running the 8877 and 3CPX1500A7 with
a Peter Dahl transformer at over 4kV and they work fine. Eimac says that the
filament should be 5.0 volts +- 5% or 4.75 to 5.25 volts. This should be
The Spec Sheet for the 8877 tube lists the Absolute Maximum Plate Voltage
of 4000 Volts for the tube, and also says in typical operation the
plate voltage is between 2700 and 3500 volts. In my amp (Ameritron
AL-1500), the plate voltage is 3750. My question is - should I be
concerned (it's
On Wed, 2012-11-14 at 23:46 +, Shoppa, Tim wrote:
Getting away from what we are discussing now (limiters) and back to the
original question... it really is just a few bucks for a relay for a rig
(without separate T and R jacks) at the 100W level, to add separate T and R
based on the amp
Yes, I didn't get that right and makes sense. Only 50W on my Radio.. 1/2
power into Amp.
I'm obviously not electronically edumacated (as they say in Hawaii :-).. just
trying to figure out how to reach out without spending an arm/leg or hurting
anything :-)
I ordered the Array AS-RXFEB to
I cant find the button to convert that metric stuff to good old USA
measurements when posted from this country(-:
Subject: Re: Topband: Vertical Array Over Uneven Ground
I never found a way to model an an antenna over anything but flat, level
ground. Not in EZNEC+ 5.0, anyway.
73, Mike
How do we know what it has with no schematic available? It could be $1-2
worth of parts.
I recommend that nobody buy anything from DXE that does not support an at
home repair.
Carl
KM1H
- Original Message -
From: Tom W8JI w...@w8ji.com
To: Buck wh7dx wh...@hawaii.rr.com;
The only problem with pushing an 8877 or the 3CPX to or over the 4KV limit
is that it enhances the chance of instability.
Carl
KM1H
- Original Message -
From: Paul Christensen w...@arrl.net
To: topband@contesting.com
Sent: Wednesday, November 14, 2012 7:23 PM
Subject: Re: Topband:
The 5.5V is a ploy to get higher emission at the expense of operational
life. It still has an 8877 filament.
Eimac has been doing similar since WW2 with pulse versions of various tubes.
Carl
KM1H
- Original Message -
From: HAROLD SMITH JR w0ri...@sbcglobal.net
To: Paul Christensen
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