Radio 80ft lattice aerial P.O.Fysh
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May 27, 1925. “RADIC" Page 189
a number of English and American
Wireless receivers that have been READ ABOUT,THE LATEST
IMPROVEMENT
manufactured expressly to cover the
limited wave band of 250 to 550 metres
and so tar we have not changed our
opinion.
The necessity to change the tuning
coils when it is desired to receive other The latest addition to the many distinctive features which characterise every Watmel
Variabla Grid Leak
fmd A.Anode Resistance and make them suitable for any circuit, is the new
broadcasting stations does not exist contact. By means of an
ingenious bronze spring (shown in the enlarged illustration) any slackness, between
in our “Burginphones.”” Tuning is the bush and adjust-
ing screw, is automatically rectified and perfect electrical contact maintained at all times. Other
arranged by a special method, where- features worthy of special mention are:—Continuously variable, silent in operation, dust and damp-proof,
by the stations required is selected by and constant in any temperature. > ’
the switch rotating over a number of
contacts, and we claim it is one of the GRID LEAK, .5 to 5 megohms, ANODE RESISTANCE 50,000 to 100,000 ohms.
simplest methods of tuning on the
Send P. C. for Descriptive Folder.
THE WATMEL WIRELESS CO.,
332A Goswell Road, London, E.C.1.
Australian Agents:
LOUIS COEN WIRELESS PTY., LTD.,
MELBOURNE, AUSTRALIA.
Mention *“‘Radio’’ when communicating with Advertisers.
submit that the result of the test from Cooroy,
America carried out on April 16, where Queensland.
one of our receivers was able to pick TO THE EDITOR.
up WOR and operate a loud-speaker Dear Sir,—I herewith give particulars of
on four valves is positive evidence of my set. I am using a single wire aerial
the efficiency of the set on that wave- 90 feet long, 45 feet high, with 30 feet
length of 400 metres, just as well as lead-in. Set used, four-valve: Rad., Det.
on 1,720 and 1,100 metres. and two Audio; P1; three-coil circuit:
Yours faithfully, 2014 valves. I can boast of being able to
BURGIN ELECTRIC CO. LLTD. get any broadcasting station in Australia
any night I require them; even 6WF,
Perth, which comes in on good strength.
Copy of a letter received from W. A. 2BL can be heard a chain away from the
Russell, Jimbour House, Dalby, Queensland, ‘phones without exaggerating.
on April 20, 1925:— Yours faithfully,
The receiver of Mr. H. W. Shambler, ’ Dear Sirs—Your letter of the 16th (Sgd.) H. W. SHAMBLER-
Cooroy, Q., with which he receives
6WF and other DX stations.
market to-day. The long waves, that
is over 600 metres up to 2,000, seem
to have greater carrying power in
daylight than the wave lengths in the
bands of 250 to 550 metres. We have
proof of the reception in daylight of
2FC and 3LO at a point in Queens-
land well over 1,000 miles from Mel-
bourne. The cricket results of the test
match tour were received from Mel-
bourne and Sydney in the middle of
the day.
7
We have received a very recent let-
?}:urfcrhon;f }E]lelirlaifl\ ’Bul:;niég Socfciett};(? An 80ft. l?ttice aerial mast built for Mr, P. O.' Fysh b'eing removed to his
who travels from Wileannia up into residence by members of Launceston Radio Experimenters’ Club. .
the North-west corner of N.S.W., and
he is able to hear Melbourne and Syd- instant to hand. The wireless set I WHEN you force the detector valve-
ney morning, afternoon and evening. got from you is very good, and we
in a regenerative set it annoys
TWe also enclose a copy of a letter we have been able to log the following
have just received from Mr. W. A. stations:—2FC, 2BL, 2VW, Sydney; your neighbours.
Russell, of Jimbour House, Dalby, 3AR, 3LO, Melbourne; 5CC, 50M, Ade-
laide; 6WF, Perth; 7ZL, Hobart; 1YA,
IF you want louder signals, add audio
Queensland, which speaks for itself.
Furthermore, Mr. Russell has also re- WNew Zealand. amplification instead of forcing the
ceived Melbourne in daylight. detector.
The set is as good as any I have
In further proof of the fact that re- heard, and in every way satisfactory. EVERY set tunes a little differently,
ceivers can be made in Australia cap-
able of receiving on 250 and 550 me-
Yours truly, so work out yours to the best ad-
tres just as well as 600 and over, we (Sgd.) W. A. RUSSELL. vantage.