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RF Equipment & Parts
 
 
RF Amplifiers

2 Tube 811A Amplifier Starter Kit
Military Tank Style!!


Click here to enlarge image
Constant Frequency Control
(EQP) C1155/MRN
Litton 60 Hz frequency control was designed many decades ago to maintain constant 60 Hz on 115 vac equipment. Vacuum tube technology at its best. I doubt anyone will purchase one of these tanks for it's intended use but what a plethora of dandy amplifier parts. New in the box too. 27" wide x 22" deep x 10-1/2" high. Some of the parts included are:

TUBES: (2) 3B28, (2) 811A, (2) 5763, (1) 6X4, (1) 0A3, (1) 12AT7, (1) 5814

Frequency Meter 60 Hz Reed Type

Oil Capacitors (2) 1500v, 4 µF

Plate Transformer: Freed 30994, 115v, 45-60 Hz primary // 2540 vct 400 madc secondary.
Measures 6" x 7" x 7" high. Hermetically sealed.

Filament Transformer: Freed 30993, 115v, 45-60 Hz primary // 2.5v @ 10 amps secondary. 1050v high pot. Measures 2-3/4" x 3" x 4" high. Hermetically sealed.

Modulation Transformer: Freed 31001, 18k ohm center tapped primary // 165 ohm secondary. Drives plates of (2) 811A's. 80 watts. Hermetically sealed.

Plate Choke: Freed 30997, 4 Hy @ 400 madc, 35 ohms DCR, 1350v high pot.
Measures 3-1/2" x 4" x 6" high. Hermetically sealed.

Swinging Choke: Freed 30996, 6-12 Hy @ 400 - 100 ma, 40 ohms DCR, 1964v high pot.
Measures 4" x 4" x 5-1/2" high. Hermetically sealed.

Filament Transformer: Freed 30999, 115v, 45-65 Hz primary // 6.3 vct @ 8 amps and 6v @ 1.5 amps secondaries. Measures 3" x 3-3/4" x 5-1/2" high. Hermetically sealed.

Impedance Transformer: Freed 31002, 8 kct @ 50ma to 2500 ohm ct @ 50ma.
Measures 3" x 3-1/4" x 5" high. Hermetically sealed.

NEW LOW PRICE!!! - ONLY $795

Mackay Linear Amplifier
2 kw HF Amplifier Deck
1.6 to 25.1 MHz *


(EQP) MR105-40A
This Mackay Marine linear amplifier seems to be in very good condition. 19" rack width, 24" deep, 21" high. Missing top and bottom covers, 2 knobs and 4CX250 driver. Long wire output. Sold as-is. No power supply.

* 1.6-25.1 MHz in 9 bands including these frequencies:

• 1.6 - 4.5 MHz, 6 - 7 MHz, 8 - 9 MHz, 12 - 13 MHz, 16 - 17 MHz and 22 - 25.1 MHz
• 4CX1500B PA Tube included
• 4 panel meters to monitor RF amps, grid and plate RF volts and a multimeter
• 2 air variables
• 2 nice, large radio switches
• 3 nice, silver edge wound coils that are tapped
• Input tuning
$1,495

Kilowatt HF "RF Deck"
1.6 - 30 MHz


   

Features from left to right:

• Motorized Inductor
• Motorized Bandswitch
• B&W 802 Plate Choke
• 3-500Z sockets

Side view of SR-110   Front view of SR-110 Bottom view of SR-110
(EQP) SR-110D
Scientific Radio Systems RF decks for the SR-110 Kilowatt Amplifier line. These complete decks were ready for insertion into the 3' standard rack. Will produce legal limit with a pair of 3-500Z's (not included). Just add the power supply and go. 10 channels completely preset and auto-tuned as operator makes selection. Each channel can be set for separate ham band, with bandwidth to boot. This is a premium quality commercial / military product and not a cheap imitation. 19" wide (rack mount), 21" deep, 17" high. Brand new!! Optional power supply below.

(1) Radio Switch 4P12T Model 88 high voltage / current band switch
(2) Johnson 122-275 ceramic sockets
(16) Various doorknob transmitting capacitors
(1) Fan for tubes w/ airflow switch
(1) B&W Model 802 Plate Choke1) Complete manual compliment for finished equipment "SR-110" in English, French or Spanish!

$795

High Altitude
SR-110H

Added features:

• Chimneys
• Large Tarzan fan on front
• Muffin fan internally or right
• 3-500Z tubes optional
Top inside view of SR-110H   Front view of SR-110H
 
(EQP) SR-110H
Beefed up version of the SR-110, this amplifier outfitted with high capacity blower, chimneys, extra internal ducting and an extra internal fan. Side and top panels included.
$1,145 each

(EQP) SR-110HT
Everything you see above plus a pair of factory installed / tested Eimac 3-500Z triodes.
$1,595 each

200 Watt HF "RF Deck" Amplifier Project
1.6 30 MHz

   
 
• (3) 6146W's in Parallel
• 12BY7A Driver
• 12DZ6 Driver
• 750 vdc @ 1/2 amp
• 240 vdc @ 1/2 amp
• 120 vdc @ 50ma
• 12 vdc @ 1 amp
• Filaments for Tubes
SR-200 Series - 3 Tube Deck      
(EQP) SR-200AMP
Scientific Radio Systems RF decks for the SR-210 / SR-240 Series of Transmitter. All final tested and ready for insertion into chassis. They plug together. Just add input and output tuning and you're ready to go! Ten card edge sockets at top of picture show SRS input boards. Available separately for $45 each. Power supply weighs 18 pounds. 6-1/2" x 8" x 5" high. RF deck is 8" x 8" x 6-1/2" high. Brand new!

• Brand New General Electric 6146W's
• Great building block for QRP Linear Amplifier. Milliwatts drive to full output.
• Full manual and schematic documentation included with purchase.

$239 / Pair - Deck & Power Supply

 

SR-200 Amplifier Channel Strip
Input Boards


Shown: (EQP) SR-200393-2
Required to tune the tube stages of the amplifier. Low-level stages are broad-band, no tuning required. Use up to "10" input boards. Some boards not complete but parts are included.
 
 
Part Number
Mfg. P/N
Frequency
Price
(EQP) SR-200393-2 200393-2 2.25 - 2.5 MHz
45.00
(EQP) SR-200393-3 200393-3 2.5 - 3.0 MHz
45.00
(EQP) SR-200393-5 200393-5 3.5 - 4.0 MHz
45.00
(EQP) SR-200393-6 200393-6 4.0 - 5.0 MHz
45.00
(EQP) SR-200393-13 200393-13 14.0 - 16.0 MHz
45.00
(EQP) SR-200393-14 200393-14 16.0 - 18.0 MHz
45.00
(EQP) SR-200393-15 200393-15 18.0 - 20.0 MHz
45.00
(EQP) SR-200393-16 200393-16 20.0 - 22.0 MHz
45.00

42 MHz VHF Amplifier
6 or 10 Meters?

Control panel view (back?) of amplifier. Verniers control air variable capacitors. Also shown are blower, in/out N connectors, voltage input terminal block.
Inside view of 42 MHz KW    
(RF) AMP42
These amplifier decks are removed in A-1 working condition from medical imaging equipment. Will produce legal limit with 4PR-1000A (included). Just add power supply and go. Add capacity / inductance to get down to 10 meters or decrease capacity / coils to get up to 6 meters. Uses highest quality components. 19" wide (rack mount), 10-1/2" deep, 16" high. Made in Germany.
(1) 4PR-1000A Eimac tube, chimney
(2) 20-110 pF 4kv air variables
(1) 500pF 13kv Draloric PD70*
(1) 50pF 14kv Draloric PD70*1) 1200pF 13kv Draloric PD100
(1) EBM G2E160AD01-01 High Volume Blower, 220v, 1.15 amps
* Draloric PD70 ceramic capacitors rated at 16 amps RMS. PD100 rated at 25 amps.
$1,495

X Band - Radar
Transmitter / Receiver

 
 
(EQP) MI-555601A
New, unused RCA Marine Transmitter Receivers. 1960-70 technology. Yes, that means vacuum tubes. Manufactured in May, 1963. Includes HV power supply. 10-1/2" x 12-1/2" x 25-1/2" long. Some tubes were removed by previous owner, thus units not operational. Sold as-is. No nomenclature.Vacuum tubes include (but not limited to):
• Mullard JP9-2.5 Magnetron with WR-90 output.
• Six 6EW6
• 6EA8
• Four 0A2
• 115NO180 Time Delay Relay
$495 each

SR-110
Complete Amplifiers

SR-110's Side by Side
(EQP) SR-110
Scientific Radio Systems SR-110 Kilowatt Amplifier's shown in stand-by and main mode, side by side. This 48" cabinet has empty area as pictured for exciter, originally to be an SR-380. RF deck and power supply final tested with Eimac 3-500Z's at factory and ready to go. Sold in 1996 for $11,000 each. Brand new!
 

2500 - 3000v
Power Supply

SR-110 Power Supply
(EQP) AR-150A
Scientific Radio Systems power supply for the SR-110 Kilowatt Amplifier. Supplies 1 amp continuous. 19" wide (rack mount), very heavy. Get a load of the huge BASLER hypersil transformer. Oil capacitor not included. Sold separately or with RF decks above. Multi-tapped transformer matches any input. Brand new!
$4,900 each
 
$795 each

 

ML500M-1
2 - 30MHz RF Amplifier

ML500M-1
 

For More Information
E-mail: grinnell@surplussales.com

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