|
Title: New to Forum - Question on Johnson Viking Ranger Post by: WB9CNS on January 13, 2005, 12:59:11 PM Hello to Everyone on the Forum. I have a Johnson Ranger and would like to Drive it with a Heathkit SB-220. I would like to be able to reduce the Power on the Ranger to 10 Watts Output. What is the best way to this? Any Suggestion would be appreciated
Bob - WB9CNS Title: New to Forum - Question on Johnson Viking Ranger Post by: kc2ifr on January 13, 2005, 01:12:41 PM Quote I have a Johnson Ranger and would like to Drive it with a Heathkit SB-220. Bob, I think u mean it the other way around...u want to drive the heathkit with the Ranger.......yes??? Title: New to Forum - Question on Johnson Viking Ranger Post by: N3WWL on January 13, 2005, 01:26:07 PM Welcome to the Forum. You can reduce the output by changing the jumpers on the 9 pin accessory plug on the rear. Simply remove the jumper that runs from pins 2 to 6 and connect it from pins 2 to 4 instead. You will lose the plate current function when doing this. One can get creative and use a hefty SPDT switch to run the Ranger at full output. Good luck.
Title: New to Forum - Question on Johnson Viking Ranger Post by: W2VW on January 13, 2005, 02:21:12 PM Quote from: N3WWL Welcome to the Forum. You can reduce the output by changing the jumpers on the 9 pin accessory plug on the rear. Simply remove the jumper that runs from pins 2 to 6 and connect it from pins 2 to 4 instead. You will lose the plate current function when doing this. One can get creative and use a hefty SPDT switch to run the Ranger at full output. Good luck. He means plate current meter function. If you do this with a switch, be sure to get one rated for the Voltage. Title: New to Forum - Question on Johnson Viking Ranger Post by: WB9CNS on January 15, 2005, 09:56:55 AM :-P Thanks Jay (N3WWL), Moving the jumper from 6 to 4 did the trick nicely. Reduced the output to 5 watts and drives the SB-220 nicely.
73's Bob - WB9CNS :-P Title: Try this also Post by: WA1HZK on January 17, 2005, 10:37:36 PM I mounted a 250K pot under the crystal cover with some double sticky tape and stuck it in the 6146 screen ckt. This worked good to drop the power from 50 to about 10 watts. Under 10 watts the modulation got screwed up but the mod did work. This is in Steve's rig, W1ES. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
Keith WA1HZK |