Erres RA641

1964

Condition and performance:

	Cabinet	80%
	Reception AM	90%
	Sound Quality AM	70%

Features:

	P.U. Entrance:	Yes
	Tape Recorder Entrance:	No
	Extra Loudspeaker Output:	No
	Loudness:	No (build in later)
	Treble Control:	Yes, switchable (deleted later)
	Bass Control:	No
	Tone Register Switches:	No
	AM Bandwidth Switch or Control:	No
	Tuning Indicator:	No
	Build-in Antenna:	No
	Build in Ferrite or Window Antenna:	Yes

Technical Specifications (Partially measured):

	Tubes:	UCH81, UBF89, UCL82, UY85.
	Wave Bands:	LW, MW.
	Intermediate Frequency (IF):	452 kHz
	Loudspeaker:	AD 3466 RM
	Resonance Frequency Fs:	?
	Frequency Range Power Amplifier:	?
	RMS Output Power at 5 Ohms:	?
	Cabinet:	Plastic. See pictures above.
	Dimensions:	32 x 20.5 x 14.5 cm
	Mains Power Voltages:	220 Volts~
	Mains Power Consumption	40 Watts
	Retail Price	?

Description:

The Erres RA641 radio is one of the latest AM radios for in the kitchen. It has no features, like a P.U. entrance and/or loudspeaker output entrance. Just only a MW and LW radio.

Repairs:

4 suspicious ERO capacitors are replaced by new polyester film ERO capacitors.
Reason: Old ERO paper capacitors are suspicious for leakage and need to be replaced for optimal safety and reliability.
Tone control capacitor is removed.
Reason: This capacitor cuts off the high frequencies only.

The tone control for the high frequencies is changed into a speech/music control. in fact it is a loudness control now, which can be switched off.
At Speech setting, the radio sounds original with almost no bass.
At Music setting, the sound is more full and pleasant.

Performance:

The reception of broadcast stations is very good.
The sound quality has improved from so so to quite well with the added loudness circuit.

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