Switch Between Tx Adjustment Items And Rx Adjustment Items; Switch Among Tx/Rx Adjustment Items; Wide/Narrow Band Switch In An Adjustment Item; Frequency Switch In A Band Of An Adjustment Item - HYT TC-610 Service Manual

TC-610/620 Service Manual
enter item N (N is dependent on the position of the Channel Selector knob) of Tx Adjustment Items in the
adjustment mode. The radio stays at Tx Adjustment Items by default and the LED glows red.
Note: The adjustment item CH15 is invalid, while CH16 is used to toggle between Tx Adjustment Items
and Rx Adjustment Items. If the Channel Selector knob locates at CH15 or CH16, the LED glows neither
red nor green.

2. Switch between Tx Adjustment Items and Rx Adjustment Items

Rotate the Channel Selector knob to CH16. Hold down the PTT key for 1.5s at least to toggle between
Tx Adjustment Items and Rx Adjustment Items. If the LED lights red upon key press, the radio switches
to Tx Adjustment Items. If the LED lights green upon key press, the radio switches to Rx Adjustment
Items.
The LED glows red for Tx Adjustment Items.
The LED glows green for Rx Adjustment Items.

3. Switch among Tx/Rx Adjustment Items

Switch via the Channel Selector knob.
Tx: CH1-CH14 indicate Tx preset power, Tx low power, Tx medium power, Tx high power, CDCSS
deviation, CTCSS deviation (low), CTCSS deviation (medium), CTCSS deviation (high), VOX 1, VOX 2,
VOX 3, VOX 4, VOX 5 and Tx low voltage threshold respectively.
Note: The Tx medium power of TC-610/620 is not required to be adjusted. Please skip this item.
The LED glows red for adjustment items CH1-CH14.
CH15 is invalid and the red LED goes out.
Rx: CH1-CH8 indicate SQL ON 1, SQL ON 5, SQL ON 9, SQL OFF 1, SQL OFF 5, SQL OFF 9, Rx low
voltage threshold and Rx bandpass filter respectively.
The LED glows green for adjustment items CH1-CH8.
CH9-CH15 are invalid and the green LED goes out.

4. Wide/Narrow Band Switch in an Adjustment Item

In an adjustment item, hold down the PTT key for 1.5s at least. The LED flashes orange, indicating the
long key press is valid. Release the key and the radio switches between wide band and narrow band
cyclically. After the wide/narrow band switch, the adjustment point is regarded as the first frequency of
the current band by default.

5. Frequency Switch in a Band of an Adjustment Item

In a band of an adjustment item, hold down the PTT key for less than 1.5s. The LED flashes orange,
indicating the short key press is valid. The radio switches frequencies one after another.
6. Plus-Minus of the Adjustment Value in a Band of an Adjustment Item
In a band of an adjustment item, short press SK1, and the adjustment value increases in steps of 1. Hold
down SK1, and the adjustment value increases continuously in steps of 1. When the adjustment value
gets to the maximum value allowed by the adjustment item, the adjustment value will remain at the
maximum value.
In a band of an adjustment item, short press SK2, and the adjustment value decreases in steps of 1.
Hold down SK1, and the adjustment value decreases continuously in steps of 1. When the adjustment
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