1
Transformer. 1500 Watt CCS core. 1250 VAC. |
2
Gathering likely components.
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3
Setting components out. |
4
See how they fit into box. |
5
HT compartment. |
6
Looks about right. |
7
Box has been dismantled, panels etched in caustic and reassembled. |
8
Papst blower and tube in place. |
9
Coming together. |
10
Coming together.
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11
Pi network hardware. |
12
Cathode compartment with filament choke and B minus line choke. |
13
Another view of the cathode and filament.
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14
Filament transformer. |
15
Getting the hardware in place. |
16
Selectable zener diodes for bias. |
17
160 metres tuned Pi network. |
18
Cathode compartment.
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19
Grid protection circuit board. |
20
Completed board for relay trip and indicator leds.
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21
Front panel, raw state, sprayed with etch primer. |
22
Front panel lettered and controls mounted. |
23
Hole for future bandswitch. |
24
My pet hate, wiring. Front panel to main chassis
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25
HV supply and grid trip relay |
26
Step start relay supply and grid trip relay.
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27
Over all view |
28
Business end
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29
Finished front view |
30
another front view
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31
Back view showing exhaust |
32
Front showing air inlets
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June 10, 2006 Hamfest |
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33
Amp on display at the convention and home brew contest |
34
First place certificate and new soldering station and driver set prizes
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35
Closeup of first place certificate |
36
Restored AR7 at the fest.
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37
Replica working crystal set built from a book article circa
1906.All the brasswork and the case is home made.For effort I would have
judged it the winner. |
38
Some of the tables
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39
Some of the tables |
40
Some of the tables
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41
Alan |
42
A few friends at the front door
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31
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32
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