scwis

Here are some spec’s to keep in mind when designing kits…

Here are some spec’s to keep in mind when designing kits…

1) Transmitter should employ a Class “A” Modulator and a Class “E” Final.

2) Modulator Deck and RF Deck should be seperate from each other.

3) The RF Deck should employ a PLL using a TCXO reference.

4) The output tuning network should employ a High Voltage / High Impedance output like the Rangemaster and have a bypass circuit for users who would like to use a base loaded vertical such as Carl Van Orden’s.

5) The kit should offer the option of either unbalanced RCA Line level inputs or a +4db balanced 600 ohm input to match pro broadcast equipment.

6) The transmitter should not have extra built-in limiters or at a minimum the ability to bypass built-in limiting when using outboard limiting.

7) Transmitter should be capable of -99%/+130% modulation for that big station sound.

8) RF/Modulator decks should use metal boxes for sheilding.

9) RF Deck should feature a tuning meter to aid in tuning antenna and setting power output.

10) The final should be 100mw DC input in unmodulated state with the ability to be jumpered to 1watt.

11) Please publish complete manual in PDF complete with schematics. Manual should be well written like the SSTRAN manual.

12) Transmitter should be marketed and sold as a kit only to cut down on costs and would idealy cost in the $200.00 range.

I think these ideas should offer a good starting point to a quality transmitter design for somebody thinking about designing a new kit.

Written By
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Rev. Robert P. Chrysafis
Universal Life Ministries(ULC)