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I needed the manual immediately and I got it immediately. I couldn't find this manual anywhere else on the net. The site was easy to traverse, and the price was very reasonable. I'll definitely be back for any future needs.
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I received a good service manual, with good resolution. Improve the instructions for the purchase because they are not well understood.
For the rest, so good.
Thanks Angel.
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Very good documentation for the Grundig 2077 model (as well as similar 800/900/1000 series radios). The first two pages are a summary of reception specifications and output capability. The third page is the tuner dial indicator and dial cord routing diagram. the final ~5 pages are the schematics for the various models (including 2077). The scan quality of the schematics are good, adn can be easily read if zoomed in. The documents are in German, not English as stated. It would have been nice to have the tuning sequence and settings, and some trouble shooting materials... or component and wiring map.
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Perfect like it was descriped, Perfect like it was descriped
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Very good detail, all pages clear, exactly what I needed
TEST AND MEASUREMENT
3. 4. 5. If the carrier leakage ratio is greater than 35 dBc then unit is OK. (offset calibration is complete). If not then repeat steps 1, 2 and 3 above for Qch offset values: 87, 67, 47, 27, 7. If the carrier leakage ratio is still less than 35 dBc then unit is a fail.
Q Inc Calibration
1. 2. 3. 4. 5. Set Qch offset to 167 (see Qch Check step 2). Measure carrier leakage ratio. If carrier leakage ratio is greater than 35 dBc then unit is OK. (offset calibration is complete). If carrier leakage ratio is less than 35 dBc then repeat steps 1, 2 and 3 above for Qch offset values:187, 207, 227, 247. If carrier leakage ratio is less than 35 dBc then unit is a fail.
I, Qch Gain
IMPORTANT: I, Qch offset calibration should be done before this calibration. Spectrum Analyser Setup. centre frequency = 902.4 MHz RBW = 10 kHz VBW = 10 kHz span = 1 MHz sweep time = 2 sec 1. Set the Channel box controls to channel 62 at power level 5, normal burst modulated with all 1�s. a. Press the down arrow until CHANGE CH > is highlighted and then press ENTER. b. Press the down arrow until PL is highlighted. Press ENTER. c. Press the down arrow until TX DATA is highlighted. Press the move arrow until 1 appears in the highlighted field. Press ENTER. 2. Using the spectrum analyser measure the image leak ratio. Image leak ratio is the measured ratio of peak power and the power at 135 kHz below peak frequency.
Example: peak power (902.468 Mhz) = 33 dBm power at 135 kHz below peak power = -9 dBm image leak ratio = 33 dBm - (-9 dBm) = 42 dBm
Figure 6.31: Image leak ratio 3. 4. If image leak ratio is greater than 30 dBc then unit is OK. (offset calibration is complete). If image leak ratio is less than 30 dBc then go to Ich gain calibration.
MCUK991001C8 Service Manual
Section 6 � 49 �
Issue 1 Revision 0
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