Ron D'Eau Claire wrote:
The oscillator stability mods really show up mostly on the higher-frequency
bands above 20 meters. On the lower bands, the drift in these oscillators
tend to cancel, but on the bands above 20 they add due to the way the
mixing scheme works. That can produce excessive drift on the higher bands.
I'd not hesitate to operate the K2 without the mods in any but the most
demanding service such as PSK31 and then only be really concerned on the
higher bands.
Ron is correct, but I'd like to add that the VFO stability mod should be
considered a must if you are planning to add a KPA100. The extra heat will
cause very noticeable drift.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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