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World of Ham Radio 1997
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WOHR97_AmSoft_(1997-02-01).iso
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mods
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ic251_2.doc
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1997-02-01
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IC251.2
NOTES:-
*******
I found that the power control on SSB/CW tends to drop the power off
rather quickly but if you use it in conjunction with the mic gain
control very low power levels are attainable (milliwatts). Since this
mod was done, G8RCF Des Sayer has also completed the same and when we
last spoke said he had not experienced any problems. An ALC input is
included in the multiway socket on the back apron and if you are going
to use the rig with a transverter for 6M, 4M, 70Cm, 23Cm or even HF, I
suggest you look at a method of using this input to control the drive
to the external equipment and not the modified power control as it is
far too easy to forget to lower the power or to catch the control. The
afore mentioned note on ALC apart, this mod is useful to run a linear
at a lower out put, e.i. I run my MML100s at 40 watts or less as this
stops breakthrough to a neighbours television set, yet alowing me to
gain a higher ERP than just using the rig to feed in to the aerial.
My thanks go to G8RCF who was the second one to modify an IC251 using
the method I used to my knowledge. Hope you find this mod of use as I
have. Any comments on how well the mod works would be apperciated to
G1GYC @ GB7NWP-2