[MRCA] weekend

[Meir WF2U]

Thanks, Jack!

I was toying with the idea of doing something similar with switching the filters independent of the mode. I just didn't have the time yet to look at the whole mode switching scheme in the manual and the impact of the modified mode switch. 
I have the matching plugs for the transceiver, I'll have to get the mating connector for the control box plug. 
I'm still looking unsuccessfully for the mount for the ARC-38. Luckily, I have the correct power supply, with the shock mount.

73, Meir WF2U
Landrum, SC

On March 20, 2016 5:33:53 PM EDT, Jack Antonio <scr287 at att.net> wrote:
>On 3/20/2016 3:46 PM, Meir WF2U wrote:
>
>> Talking about the ARC-38: I managed to find one original, "non-A" as
>they
>> say in the R-390A circles... I have the original military power
>supply for
>> it and also a 115 VAC 50 Hz to 115 VAC 400 Hz static inverter. I
>could only
>> find an ARC-38A control box, which is actually a depot-converted one
>> originally made for the ARC-38. The mods are listed in the
>ARC-38/ARC-38A
>> manual so I may be able to reconvert to the original if I can figure
>out how
>> to disassemble the control box innards, which looks like a Chinese
>puzzle
>> and packed like a sardine can. Anyone with experience/ideas of
>converting
>> the function switch back to original or just using as it is, simply
>using
>> different pins on the remote connector?
>> Or, better yet, does anyone have a line on an original C-1398/ARC-38
>control
>> box?
>
>
>
>The C-3428/ARC-38A box will work with the RT-311 with no wiring changes
>or modifications. Simply wire it up as a C-1398 as the book shows.
>
>On/off, frequency selection, local remote switching,
>channel presets are all the same, and the AM and CW modes will 
>correspond with AME and CW on the control head. The SSB/FSK position 
>will bring up AM operation, but with the narrow filter selected.
>
>The mode switch also rearranges the gain control lines between the
>various modes, and the gain controls will not be correct in the SSB/FSK
>position.
>
>The modification involves more than a wiring change, one switch wafer
>on
>the mode switch is different between the two, this wafer being a part
>of the gain control switching I mentioned above.
>
>I wound up intercepting the the filter select lines so I could switch
>between narrow and wide independent of the control head, and I ignored
>the SSB position altogether.
>
>As far as availability goes, I have seen the C-1398 show up once
>in a great while on the auction place, so keep your eyes open.
>
>I've also found the ARC-38 works well on CW, I've checked into
>the Sunday night net a few times with it.
>
>
>Jack Antonio WA7DIA/4
>
>
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