[Elecraft] Xverters

[cptpatmcd]

Good points.  I'm glad to hear from someone with a bit of experience.
I'll seriously consider one now.



Giulio Pico wrote:
> 
> 2008/6/6 cptpatmcd <cptpatmcd at gmail.com>:
>>
>> Tom,
>>
>> My background is physics, not rf theory. But you're saying that the xv144
>> gives you better performance than a rig that was designed for that?  I
>> guess
>> thats not too hard to believe, but still counterintuitive from my
>> standpoint.  Do you think I would get acceptable results from adding a
>> texas
>> microwave (or any brand) on top of the xv144 for 1.2 (or is it 1.4) ghz
>> operation? My main interest in this area are the amsats but I've only
>> managed a few sketchy qso's with a handheld before. Using transverters is
>> uncharted waters for me.  The only reason I'm considering one now is that
>> 1.
>> elecraft makes them and 2. a lot of folks seem to use them... so they
>> cant
>> be that bad right? I'm just skeptical of the added noise you introduce
>> into
>> the system with using them.  Again though, I have no practical
>> experience.
>> --
> 
> There are several good reasons on this one.... to go for an xv...
> 1st: The dynamic range. You will not find any on the market radio born
> for 144 MHz with a dynamic range comparable to an HF plus xverter
> setup (almost every serious contesting station in europe goes for this
> choice). The main reason is that the designers don't think 144 MHz can
> be as crowded as HF, but there are many stations in the spread in
> europe that report 700-800 qsos per 24h contest.
> 2nd: You can benefit from the many optional filters and dsp stuff that
> are normally confined only in hf rtxs.
> 3rd: On weak signal the setup is as good as the best 144 rigs, if not
> better.
> 4th: The design and production in the majority of the commercial IC
> from the usual suspects is often directed to save money in the
> production process, regardless of the final performance.
> 5th: You don't really add noise, take a look at the NF figure of the
> xverter, and try to compare it with some of the "good" rigs on 144
> MHz.
> 
> 73 de Giulio IW3HVB
> 
> P.S.
> I currently use an IC-275 on 144 MHz (on FM...)  But for serious
> operation the XV144 and the K2 added a lot of fun and made my life
> much easier in contest.
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