Cobra 148GTL and Grant XL are dual conversion receivers while the 29 all types are single conversion.... There should be some headroom to adjust the 29 for gain in the RX area but nowhere near the 148 and Grant.
Option would to use a preamp, either built-in or external. The old 'Channel Guard' worked well in the 29!
73 mechanic
Option would to use a preamp, either built-in or external. The old 'Channel Guard' worked well in the 29!
73 mechanic