If a driver is bad.

[Oldtimer]

Howdy.
If the driver is bad in a Cobra 29 will it rx and not tx.
What does the driver do?
Thanks to all who answers.
GOD BLESS

 

[Beetle]

Howdy.
If the driver is bad in a Cobra 29 will it rx and not tx.

>> Probably. The driver is on the transmit side in most transceivers. Shouldn't affect receiving at all.

What does the driver do?

>> It boosts a very low-level signal from earlier in the transmitting/modulating chain to a level at which the final amplifier can bring it up to the legal level. Think of an audio pre-amp.

Thanks to all who answers.

>> Zero perspiration.

 

[Oldtimer]

Checking a driver

How does one go about checking a driver
Thanks

 

[mackmobile43]

How does one go about checking a driver
Thanks

One can remove the driver transistor and with information from the data sheet for that paticular device determine which terminals are the base/collector/emitter junctions and usually with a VOM in diode test mode determine if said device has gone short or open circuit.

 

[Beetle]

Good o'scope, DMM, RF voltmeter with appropriate probes, schematic of radio, circuit board layout of radio...

...for starters.