[Elecraft] Kenwood SM230 station monitor

[Charles Harpole]

Note that the thru put power of the SM 230 is stated as 

ONE Kilowatt, not 1.5 or higher.  SM-220 sez 1.5.

I had some problems pushing FULL power thru an

SM 230, but not any problems with the SM 220.

73,

Charles Harpole

k4vud at hotmail.com




> Date: Mon, 4 Aug 2008 08:53:40 -0500
> To: Timothy.Raymer at mdc.mo.gov; vk6xh at arach.net.au; elecraft at mailman.qth.net
> From: n0ss at embarqmail.com
> Subject: Re: [Elecraft] K3 ( or K2 ) with a Kenwood SM230 station monitor
> CC:
>
> Hi Guys:
>
> UNfortunately, I have the SM220, which is a bit different from SM-230.
>
> I use my SM-220 ONLY for monitoring the RF output from my station. Period.
>
> However, if I recall, both the SM-220 and SM-230 have some provisions
> for displaying the IF output from a receive IF that IF output has been
> properly converted to the input of the IF input section of the monitor.
>
> I cannot say whether either of these monitors would be worthwhile for the
> displaying of a usable IF output from the K3. You'll have to get that info
> from someone much more knowledgeable than I. However, I cannot recommend
> these monitors highly enough for helping to keep track of your transmitted
> signal.
>
> I've had an output RF monitor for the past 40 years and cannot imagine
> operating my station without having one available. They have found 'problems'
> I'd probably never have noticed had I not had one available.
>
> 73,
>
> Tom Hammond N0SS
>
> At 14:56 08/02/2008, Timothy Raymer wrote:
>>Keith,
>>
>>I know Tom, N0SS, has has an SM-230 in line for quite some
>>time. Far predates his K2, but is a useful tool. Especially useful
>>if you are also making your electrons "taller" with an Amplifier.
>>
>>The SM-230 lets you monitor your output in a Voltage vs. time
>>domain: It is a specialized Oscilloscope. The Kx is pretty good
>>about not making ugly electrons, but the amplifier you drive over
>>the edge could.
>>
>>The other thing I remember about the SM-230 and Tom's station is
>>that it induced some strange SWR issues by the time we got up to
>>28Mhz. Combination of lengths of coax, impedance of the unit
>>itself, and a few other oddities caused a bit of a problem for a
>>contest a few years ago. Just keep in mind when you put it in line
>>you may need to shorten or lengthen the coax runs a bit to get things happy.
>>
>>Good luck, and enjoy the SM-230.
>>
>>Tim Raymer
>>73 de KA0OUV
>>
>>
>>>>> Keith Bainbridge  07/26/2008 08:31>>>
>>Does anyone have experience using the if output of the K3 into a Kenwood
>>SM 230 station monitor please ?
>>Or using a K2 in the same scenario?
>>Its just that I have the chance to acquire one at a good price and as I
>>have the LP Pan from Larry I was wondering if the SM 230 would be a
>>useful asset for either of my K2's or my K3.
>>Thanks guys
>>73
>>Keith
>>
>>--
>>Keith
>>VK6XH / VK6DXR
>>Chairman WIA VK6 Advisory Committee.
>>Northern Corridor Radio Group Inc VK6ANC
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