[Elecraft] Question on using the XV50 with a K2

[Ron D'Eau Claire]

Hi DW:

You asked:

"I do not have the K60XV. It says that the Transverter turns on when the
Band+ or the Band- are selected. I assume this means the XV50 will turn on
when 10 meters is selected with the K2?"

No. After doing the setup with your K2, your K2 will now have a 50 MHz band
in the BAND rotation. When the 50 MHz band is selected, your XV50 is
activated. When 10 meters (28 MHz) is selected, the XV50 will NOT be active.


That's all set up with the TRN items in the MENU as described in the
manuals. You can actually have separate XV40, XV144, XV222 and XV432
transverters all daisy-chained on your K2 and the K2 will then show the 50,
144, 222 and 432 MHz bands in the BAND switch rotation. 

You asked:

"The manual stated not to use an antenna relay to switch between an HF and
the 6 Meter antenna? I guess this also includes a manual antenna switch
which are more lossy than a good quality antenna relay? What option is left,
unscrewing the antenna at the back of the K2 when operating HF?" 

The problem with an antenna relay is isolation, and manual says. Most relays
aren't very good, especially at 28 MHz. So, even though the K2 is feeding
power to the transverter, enough RF is usually coupled to the 10 meter HF
antenna to radiate significant signal. 

The challenge is to find a relay or switch with adequate isolation.
Otherwise, you are left to swap antenna cables (which does provide good
isolation!) unless you use the K60XV. That's one of the major reasons for
providing the K60XV interface. When using the K60XV interface, no RF is
generated at the K2 ANT connector on the VHF bands. 

When using the KAT100, the switch or whatever you use to direct RF to the
transverter, goes between the K2/100 and the KAT100. When driving a
transverter, the K2 is running at only a few watts to drive it, even if it
is equipped with the 100 watt amplifier. 


Ron AC7AC

 



-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of DW Holtman
Sent: Thursday, April 10, 2008 7:18 PM
To: Elecraft at mailman.qth.net
Subject: [Elecraft] Question on using the XV50 with a K2


Hello,

I have a couple of questions I hope someone can help me with. My XV50 is
almost built. I have not put power to it yet. 

Reading the Owners Manual I don't really understand the best way to hook up
both an HF and a 6 Meter antenna. I do not have the K60XV. It says that the
Transverter turns on when the Band+ or the Band- are selected. I assume this
means the XV50 will turn on when 10 meters is selected with the K2? What If
I wanted to operate 10 Meters? Do I turn the XV50 off manually?

The manual stated not to use an antenna relay to switch between an HF and
the 6 Meter antenna? I guess this also includes a manual antenna switch
which are more lossy than a good quality antenna relay? What option is left,
unscrewing the antenna at the back of the K2 when operating HF? 

How are some others using the XV50 with a K2. I'm also going to wire in a
KAT100 and my K2 has the 100 watt option. 

Thank you in advance for any help.

Best,
DW Holtman
WB7SSN
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