The Ameritron AL-811 10 meter mod is simple to do if you have just a little mechanical ability.
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Page 1 NO TUNE TMOS-FET AMPLIFIER The Ameritron ALS-1300 is a 160 through 15-meter 1200-watt output solid-state amplifier. An optional user- installed MOD-10MK filter assembly extends operation to 12- and 10-meters. The ALS-1300 uses eight 50- volt conservatively rated linear RF MOSFETS. Jan 04, 2020 AMERITRON 10 METER MODS PDF - 10/12 Meter Modification Instructions. AL (not A or B). The AL needs a kit to modify for 10/12 Meters. Write to us for details. All other units DO NOT.
Now that the FCC have rolled back or removed the ten meter ban on amplifiers. Companies are selling them so it should be safe to share this.
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Ameritron AL-811 10 Meter Mod
Modifying this amplifier for 10/12 meters, this use to require sending a copy of your license to Ameritron. Use this link Ameritron requests. Then they would send you directions. I recommend you do that now, especially if it is a new amp. If you have not bought it yet you may want to ask if they can do it for you. Their directions will not ruin the warranty.
- Take off the window on the bake panel and see if you can see the green wire. If not then take out the cover screws and remove the top. Locate the rear panel PC board and the AUX tuning coil from the rear panel.
- Looking down along the rear you should see the green wire connected from the PC board to the AUX tuned input coil as shown in the diagram. Cut the green wire and make sure it will not touch or go to ground.
- Replace the window or cover and screws.
In some cases a high SWR may occur at the amplifier input. You will have to adjust the AUX tuned-input circuit slug with a plastic 0.1” hex T.V. tuning tool.
Put the tuning tool in place, tune the amplifier and tune for the lowest SWR while transmitting. Ameritron amps usually come pre-set for 10m (AUX tuning).
You may use 12 meters more than 10 and want to tune it for better performance. Re-tune the slug for lowest SWR in the middle of the 12 meter band. Or you could compromise the match, setting it for halfway between the 10m dip and the 12m dip. This will make it work on on both bands.
Watch the grid drive while doing this with the 811A tubes. They do not like to be over driven over driven.
This easy Ameritron AL-811 10 meter mod will have you talking on 10 and 12 meters soon, Happy DXing.
Brand: Ameritron
Manufacturer's Part Number: MOD-10MB
Part Type: Amplifier Modification Kits
Product Line: Ameritron 10 Meter Amplifier Modification Kits
DXE Part Number: AME-MOD-10MB
UPC: 650619014549
Quantity: Sold as a kit.
Ameritron 10 meter amplifier modification kits contain all of the necessary parts, circuit boards, modules and instructions. You can successfully perform this modification that adds 10 and 12 meter band coverage to your USA purchased Ameritron solid state amplifier. Proof that you hold a valid US amateur radio license is required when ordering.
Most Helpful Reviews
ALS 600S 10M
DX Engineering Verified Purchase
Works as described easy install 0 of 0 Sylenth1 v3 torrent. found this review helpful.
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Cancel Reviewer: WILBURfrom MI
Date: November 06, 2020
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12/10 meter converter
DX Engineering Verified Purchase
Easy to install. Perfect 0 of 0 found this review helpful.
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Cancel Reviewer: MICHAELfrom FL
Date: September 22, 2020
AppearanceEase of InstallationPrice/ValueQuality
simple to install,works great
Ameritron 10 Meter Mods Pdf Writer Download
DX Engineering Verified Purchase
The hardest part of installing this was taking all the cover screws off my amp. No soldering--it just screws into place with 4 screws onto the ALS-600. They include an install sheet with pictures. Took me 10 minutes and now the amp does 12m and 10m, and the cost was extremely reasonable. Just check your serial number to make sure you get the right model of board; there is one for older amps and one for newer ones. 0 of 0 found this review helpful.
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Ameritron 10 Meter Mods Pdf Writer Apa
Cancel Reviewer: ANDREWfrom NC
Date: April 18, 2018
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Fast
DX Engineering Verified Purchase
Haven't had the time to install yet but fast service as always from DX Engineering.. 0 of 0 found this review helpful.
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Cancel Reviewer: JOSEPHfrom WA
Date: November 29, 2017
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