1944 C-15A-Wire-5 Restoration

[Robert Bergeron]

Hi , i have no wireless truck experience so i have a stupid question : How do you ground the truck to ground ? Is it as simple as connecting a wire to a frame bolt to a wire and connecting it to a metal spike in the ground ? Manuals speak of grounding the truck to improve reception / transmission over the wireless set , that’s why i am asking .Why does it help ? I have operated on the same frequency ranges in airplanes and we ain’t grounded to earth and it works fine . I must add we have static «*wicks*» on the trailing edges to dissipate static that accumulates on the airframe in precipitation. Just asking .

[Bruce Parker (RIP)]

Originally Posted by Robert Bergeron

Hi , i have no wireless truck experience so i have a stupid question : How do you ground the truck to ground ? Is it as simple as connecting a wire to a frame bolt to a wire and connecting it to a metal spike in the ground ? Manuals speak of grounding the truck to improve reception / transmission over the wireless set , that’s why i am asking .Why does it help ? I have operated on the same frequency ranges in airplanes and we ain’t grounded to earth and it works fine . Just asking .

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[Robert Bergeron]

Thanks Bruce . Here i kidnapped Bruce ´ s picture of the correct grounding rod for the truck. Any leads on these anyone ?

[Robert Bergeron]

Testing the 12 Ft whip antenna , antenna connections and ground connections today . It coincides with the first day the temperature is above zero C in the past few months ...

[Robert Bergeron]

I had a strong & clear signal 5/5 from CHU Canada on 3300 Mhz . The transmitter is located near Ottawa ( Nepean ) Ontario 418 Km away as the bird flies from the truck . Pretty impressive . The power of the transmitter is 3 Kw ( a lot compared to the 250 /1000 W of many amateur radio sets ) on that freq but still it was mid day and conditions are not the best at that time . That with the standard war time 3 piece antenna ! I used the standard base with wooden spacer and spring clip to hold the antenna rod thight . I used house power so the power supply was grounded to the outlet . When i ´ll use the batteries i will ground the truck . I did not try running the truck engine nor the generators while operating the radio , another thing to try later .

[Bruce MacMillan]

I like that first photo of the truck and background. Worthy of an inclusion in a calendar. Maybe an idea for next year, an MLU calendar, proceeds supporting the website.

Originally Posted by Robert Bergeron

Testing the 12 Ft whip antenna , antenna connections and ground connections today . It coincides with the first day the temperature is above zero C in the past few months ...

[Robert Bergeron]

Thank you for your nice words Bruce . Here i finaly realised the sliding writing table under the wireless was made out of wood .So i cut to size some 3/4 inch plywood and covered it with similar sized Masonite for smothness and finish .

[Robert Bergeron]

Here is another shot . I am starting to work on the metal drawer to goes to the left of this writing table . It slides out on the same rails as the writing table to the left of it . It has a lock to secure code books i presume , at least that’s what we did in my time ...I put in a little Jimmy aide memoire in the picture to bring joy to my friends who used to be signalers by trade .