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(h)f2a6 ®i25k t bottom view

(h)f2a6 ®i25k t bottom view

Fig, Location of parts of the BC-453 series re ceivers.

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Fiq. 2. Connections to the iront panel plug.

of 180 v and get excellent results. If you have I2v filament voltage available ac or dc), you ma\ use the tubes supplied with the receiver, however, if you only have 6 v filament voltage, it w it! be necessary to make the following tube replacements:

Replace 12SK7 by 6SK7 Replace X2A6 by 6K6 Replace 12SR7 by 6SQ7 Replace 12K8Y by 6K8

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jack

Operation

Connect a set of headphones to the jack installed on the front panel, connect any antenna to the antenna jack, hook up a power supply and you're ready to go. Adjust the pot (the rf gain control) to a comfortable listening level, peak the "align input" control to maximum volume and then readjust the rf gain control.

When I converted my BC-454, I was a bit dismayed to discover that I had no tuning knob for the receiver* I did, however, have a few scraps of old rubber tubing of Yis inch inside diameter. Tubing of this size slips easily over Hie tuning gear and makes an excellent tuning device.

The receiver as it stands with the 6 or 12 volt set of tubes is quite sensitive; however, additional sensitivity may be obtained with 6 v tubes by replacing the 6SK7's by surplus

717A*s.

IIZV WTT>4 IZV TUBES 6V WIT* 6V TUBES

IIZV WTT>4 IZV TUBES 6V WIT* 6V TUBES

BAP* ENO

Fig. Pcwer connections to the receiver. JUNE 1966

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