Moderator: JR Moderator
- NEW DUCK
- Posts: 2
- Joined: Tuesday, 19 March 2013, 5:54 AM
- Radio: cobra 2000 gtl
- Antenna: hygain spt 500
- Name: Mickey Rockett
- Home Phone: 205-424-1997
- Cell Phone: 205-910-1308
- Posts: 150
- Joined: Thursday, 06 January 2011, 10:15 AM
- Radio: Many
- Antenna: PDL II
- Name: Tim
- Location: Chicago Burbs
Now turn your mic or radio modulation up, and do the same thing again. Adjust the tune and load for max output with a steady ahhhhh, or shhhhessshhhh, or even a whistle. Same rule, never key up for more than 10-15 seconds at a time. Keep going back and forth between the tune and load until the output settles to max wattage. Now, turn the load knob to the right while modulating the same as you did before, until you see a very slight drop in output wattage, this is overcoupling and will help to clean up you audio. At this point, you can use the drive knob to adjust the amplifiers deadkey. With no modulation.. radio or mic turned down..key the mic, and adjust the deadkey to about 30% of what your peak output wattage was. If it wont get that high, set it to about 30-50 watts.
Now you are good to go. If at any time, you see the tube plates glowing cherry red... STOP!!!!!! Let everything cool down before going further. If that box has a high and low setting, make sure you tune, and load it on the high setting only, and in am mode. Also, the first thing you should do is to make sure your swr is as low as you can get it. With practice, you should be able to tune, and load the amp in less than 20 seconds. You will typically only have to retune, and load if you swap radios, antennas, or move up or down 10 channels or so.
- North Texas Mudduck
- Wordwide & Qualified
- Posts: 2930
- Joined: Saturday, 30 September 2006, 19:22 PM
- Location: North West Texas
if you talk at the same tone of a whistle then tune up with a whislte
- Posts: 149
- Joined: Thursday, 28 July 2011, 15:26 PM
- Radio: Cobra 148GTL
- Antenna: Imax 2000
- Name: Flex
- Home Phone: ch 33 and ch 37
- Location: Yarldey Pennsylvania
Radios: 858 Washington, 8719 Washington, Galaxy Saturn, HR2510's, TS-5010, 148GTL.
Amps: KLV1000, Eagle 515, KLV550, Palomar 225.
Antennas: Imax 2000, Wilson 5000.
Mics: Homebrew amplified Compressor, D104M6B's with tone mod.
Who is online
Users browsing this forum: No registered users and 4 guests