Hydroponics Online Store



Hydroponic Systems

Hydroponic Grow Lights & Bulbs

Hydroponic Tents & Grow Boxes

Hydroponic Ballasts

Grow Light Reflectors

Hydroponic Nutrients

Grow Media Rocks

Hydroponic Pumps

Hydroponic Pots

Hydroponic Books

Meters

Hydroponic Exhaust Fans

Hydroponic Seeds

Hydroponic Foggers

Home Store Blog Forums FAQs Lesson Plans Pictures


Search:



Drake L7 HF Amplifier For Sale


Drake L7 HF Amplifier



This item has been shown 0 times.

Buy Now

Drake L7 HF Amplifier:
$1,352

Here is one of my Drake L7 Amplifiers. This unit is in excellent working condition and includes the required L7-PS power supply unit. I will ship the unit in two boxes: one for the power supply, and one for the deck. Transmission tubes will be shipped in place, but will have additional protective packing around them (REMOVE BEFORE USING). Drake built these amps back in the day when the rules were 1000W input on CW and 2000W input on SSB. These amps are about 60-75% efficient. So that means about 750W output on CW and 1200W+ PEP on SSB when properly tuned and powered via a 220V mains. This unit will function on 110V mains but at slightly reduced power. Also, there are many pictures of these amps with "blue" meter faces rather than the "white" meter faces as seen here. In actuality, they are all the same as the "blue" look is simply from a thin plastic film slid in front of the meters. Remove the plastic film and you have the white faces. The power supply typically sits in the floor away from the operating position. This particular unit is already wired for 220V mains.


Items included:


- Drake L7 RF deck

- Drake L7-PS power supply

- Original print Drake manual



Thanks for looking!!


- Please ask any questions you may have before offerding and I will do my best to answer them.

- I am selling this item "as is" and without any express warranty or guarantee.

- Buyer must pay via Paypal within three days or I reserve the right to void the sale and relist.

- Shipping to U.S. & Canada addresses only.


On Jun-30-11 at 05:32:25 PDT, seller added the following information:

The finals in this unit areEimac that appear to be the original set. I tuned this amp a few months ago and got 730 Watts CW outputon an LP-100A Wattmeter, which is well within the range of what one would expect. I'm also including a copy of my handy-dandy, step-by-step, never-fail cheat sheet on "How to Tune a Drake L7 Amp." It's not in the running for the Nobel Prize in Literature, but it does make tuning an L7 relatively easy. It's basically the tuning instructions from the Drake manual but in a more concise, step-by-step form with additional steps to correctly adjust the ALC control during the tuning process, something not clearly detailed in the Drake manual.


Buy Now


 

Hydroponic Forum Discussions:

A few hydroponic items for sale
Solar powered Hydroponics
Cooling Nutrient Water Outdoors

Popular Hydroponic Items:


Alinco Elh-730d 70cm Bi-directional Linear Amplifier 30 Watts, Fm, Usb, Cw, Atv picture
Alinco Elh-730d 70cm Bi-directional Linear Amplifier 30 Watts, Fm, Usb, Cw, Atv


Hurricain 300 Linear Amplifier Read Details picture
Hurricain 300 Linear Amplifier Read Details


Rm Kl - 200  Linear  Amplifier  Am -  Fm - Ssb- Cw picture
Rm Kl - 200 Linear Amplifier Am - Fm - Ssb- Cw


Heathkit Sb-200 Hf Aplifier * picture
Heathkit Sb-200 Hf Aplifier *


Galaxy 250  Base 10-meter Linear Amplifier 120v Plug In The Wall.motorola Mrf454 picture
Galaxy 250 Base 10-meter Linear Amplifier 120v Plug In The Wall.motorola Mrf454


Band Decoder  Yaesu Elecraft Ten-tec Lpf Amplifier Antenna Switch picture
Band Decoder Yaesu Elecraft Ten-tec Lpf Amplifier Antenna Switch


Control Board For Hf Transistor Power Amplifier Ldmos Mosfet Rm Italy picture
Control Board For Hf Transistor Power Amplifier Ldmos Mosfet Rm Italy


Amplifier 1000w 1.8-30 Mhz Only Pcb For Sd2933/vrf2933 No Ldmos picture
Amplifier 1000w 1.8-30 Mhz Only Pcb For Sd2933/vrf2933 No Ldmos


Ldmos And Mosfet, Rm Italy Amplifiers Input Protection Unit picture
Ldmos And Mosfet, Rm Italy Amplifiers Input Protection Unit


Hf Power Amplifier 1000w Transistor Sd2933 1kw No Ldmos Cw/ssb Less Transistor picture
Hf Power Amplifier 1000w Transistor Sd2933 1kw No Ldmos Cw/ssb Less Transistor