1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148 
REMARKABLE RESULTS FROM COACH RADIO SET
Page 94
Page 95
If you've noticed an error in this article please click here to report it so we can fix it.
TN a demonstration which we attended
last week, we were afforded evidence that the various difficulties that have attended the use of wireless-receiving sets on coaches have been overcome by an apparatus built into the vehicle itself. The radio equipment which was the subject of this trial was the Philo) Transi e52
Difficulties Overcome by a New SuperhetrodyneApparatus Built into the Vehicle tone, a poweilui superhetrodyne, completely screened and mounted under the scuttle of the coach, where it is unob
trusively accommodated along with the moving-coil loud speaker.
Remote tuning control by a small dial mounted on the steering column, just below the wheel, is used, and this tuning plate is the sole visible evidence of the presence of the set. In the installation on the coach, various special measures are taken to suppress any possible interference from the engine and its accessories, and, as our experience satisfactorily showed, these steps are most efficient.
The vehicle to which the set was fitted was driven in and around London, between tall buildings, under and over iron bridges, and even along London tramlines with the electric conduit system, as well as overhead wiring. In no case was any interference experienced, whilst turning to the right or left had no effect on the clarity of the reception or its volume.
Current for heating the valve fila meats (L.T. current) is taken from the battery of the lighting. system, whilst H.T. is derived from a dry battery mounted under the driver's seat. The aerial consists of a wire mesh concealed in the roof. The price of the set, as shown to us, is (with loud speaker). 33 guineas, plus the cost of installation,