409
Item nr.
Align radio and TV with digital accuracy
| Production | New York, 1960.
Price was $38.50. |
|---|---|
| Bands | A (250-850kHz), B (850-3000kHz), C (3-11MHz), D (11-45MHz), E (33-135MHz). |
| Tubes | 6AG5 (equiv EF96), 5965 (date code: 59-23, equiv 12AT7/ECC81), 5965, 6211 (equiv 12AT7). |
| Semi- conductors | Diode rectifier. |
| Cabinet | Steel. Size 26x18x14cm. Weight 2.6kg. |
| Power | AC, 220V. |
| Documents | Ad from Electronics World, 1962. |
The RF oscillator is a beam tetrode 6AG5. The unit also contains three double triodes, namely twice the 5965 and the 6211. I don't know why the third is different, it could even be a replacement.
The power transformer was replaced to make the set suitable for 230V AC. The chassis pictures show the placement of the four tubes. There are only four band coils, because band E uses the third harmonic of band D.
| Obtained | 8/2015 from Markt Elektriciteitsmuseum. |
|---|---|
| Condition | 8; complete and functional, front lettering a bit faded. |
| Disposed | Sold 4/2019. |
The Genometer was probably used by a smoker. Here you see the line chord, a part that was inside and a part that was outside the cabinet. 
I replaced three caps (including the cardboard filter cap) and the line chord, and found the Genometer to work well. That is to say, it appears well, but by lack of manual, I'm not precisely sure what it should all be able to do.
After a while it stopped working in modulated mode, and I replaced all remaining wax-paper caps (right).
In April 2016 I installed a frequency counter in the unit. I had to drill a few holes and jigsaw a rectangle. On the left you see the small PCB for the counter, and a power supply that supplies the counter with 7V DC by rectifying the heater voltage. The Frequency Counter allows to set the frequency of the unit very accurately and serves as a power-on indicator at the same time.
Unfortunately, it misdisplays when the 400 Hertz modulation is selected: the readout is then 8 to 12% less than the real value. The 400Hz modulator makes the signal disappear completely during part of the 400Hz cycle, so the counter unavoidably misses some counts. So to align a radio precisely with modulation, you should first tune the oscillator unmodulated, then switch on the modulation.
