开云体育

Yes, they can be found. Discussions here:

/g/DRAKE-RADIO/search?p=created%2C%2C%2C20%2C2%2C0%2C0&q=prom

In short, the PROM is a clever band segment edge detector that disables the UP or DOWN buttons when you reach a segment edge. The inputs (address lines) connected to the N-code bus are likely ESD sensitive when handling the DR7. You can actually remove the PROM from the DR7 and the rig should operate normally. The only difference will be that you can traverse beyond the segment edges with the UP/DOWN buttons. You should not transmit beyond the limits or you risk higher out of bad emissions or damage to the LPF module.

On Tue, 08 Apr 2025 04:27:00 -0700
"Diego Gallo via groups.io" <lu3hdd@...> wrote:

We’ve identified the root of the problem as the PROM memory (U9003) (MMI 6300), which has two inputs shorted.

I would greatly appreciate any information regarding this component, particularly the data it contains. Additionally, if this memory is no longer available on the market, does anyone know of a compatible replacement?

--

73

-Jim
NU0C