Dummy load

[Rick Bleda]

I feel like the dummy, but I just bought and put together the DL-1 from
Elecraft, and I have no clue how to use it. Can someone help? I need step
by step instructions: ( lol
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[ny4g]

Are you a radio amateur?  I don't see a call sign.

Ariel

Sent from my iPad

On Aug 19, 2013, at 2:21 PM, "Rick Bleda" <[hidden email]> wrote:

> I feel like the dummy, but I just bought and put together the DL-1 from
> Elecraft, and I have no clue how to use it. Can someone help? I need step
> by step instructions: ( lol
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

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[Don Wilhelm-4]

Rick,

A dummy load is something that you connect to a transmitter which you
want to test without using an antenna.
It provides a good 50 ohm resistive load to the transmitter whereas an
antenna feedline impedance can vary all over the place (transmitters are
designed to operate into a 50 ohm resistive load).

When the transmitter is not in use, it is wise to connect the antenna
output to a dummy load - the transmitter will be better protected from
static surges coming in on the antenna feedline - those surges can
damage the transmitter or receiver.

Do not exceed the power rating of the dummy load.

The Elecraft DL1 has a diode detector that allows you to use your DMM to
measure the recified DC voltage and compute the actual power using the
formula in the instruction manual.

Another use of a dummy load is on ATUs that have more than one antenna
port - connect the dummy load to any unused port just in case that ANT
is accidentally selected.  You transmitter will be loaded with the
proper load rather than transmitting into an open circuit (that can
damage the transmitter)

73,
Don W3FPR

On 8/19/2013 2:21 PM, Rick Bleda wrote:
> I feel like the dummy, but I just bought and put together the DL-1 from
> Elecraft, and I have no clue how to use it. Can someone help? I need step
> by step instructions: ( lol
>

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[Dick Dievendorff]

Hi, Rick!

You connect the Dummy load to the antenna connector of your transmitter
using a short jumper coax connector (or a dual-male BNC adapter, if
appropriate).  Now the transmitter sees a very nice "antenna", approximately
50 ohm resistive impedance.  You can transmit (within the power limits of
your dummy load) and the transmitter should see more or less a 1:1 SWR load.

I use dual plug BNC adapter to connect my DL-1 to the K3 KXV3 transverter
output connector during the milliwatt Tx gain calibration.

The adapter looks something like this:

http://www.mouser.com/ProductDetail/Amphenol-RF/31-218-RFX/?qs=sGAEpiMZZMvKc
Ua6gL0RXDfubrP3pdc2hl1EOgQvgOU%3d

73 de Dick, K6KR


-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Rick Bleda
Sent: Monday, August 19, 2013 11:22 AM
To: [hidden email]
Subject: [Elecraft] Dummy load

I feel like the dummy, but I just bought and put together the DL-1 from
Elecraft, and I have no clue how to use it. Can someone help? I need step by
step instructions: ( lol
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[Mike WA8BXN]

I guess the first step is deciding what you want to do with it. They are
generally connected to the output of a transmitter in place of an antenna.
Then you can test the transmitter without causing interference to others. As
described in the manual, you can use a volt meter with it to determine the
amount of power coming out of the transmitter.

 

73 -

Mike WA8BXN

 

 

 

 

 

-------Original Message-------

 

From: Rick Bleda

Date: 8/19/2013 2:21:54 PM

To: [hidden email]

Subject: [Elecraft] Dummy load

 

I feel like the dummy, but I just bought and put together the DL-1 from

Elecraft, and I have no clue how to use it. Can someone help? I need step

by step instructions: ( lol
______________________________________________________________
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[Mike K2MK]

Hi Rick,

Connect your transmitter output to the BNC input of the DL-1. A dummy load allows you to test your transmitter without sending your transmitted RF signal into an antenna where it can cause unintentional interference to others. The DL-1 has a 20 watt limit. You can also attach a voltmeter to the test points for a voltage measurement that translates to watts of output per the chart in the manual.

73,
Mike K2MK

Rick Bleda wrote

I feel like the dummy, but I just bought and put together the DL-1 from
Elecraft, and I have no clue how to use it. Can someone help? I need step
by step instructions: ( lol