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2 Tube 811A Amplifier
Starter Kit
Military Tank Style!!
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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.
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| NEW LOW PRICE!!! - ONLY $795 |
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Mackay Linear Amplifier
2 kw HF Amplifier
Deck
1.6 to 25.1 MHz * |
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(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 |
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Kilowatt HF "RF
Deck"
1.6 - 30 MHz
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| Features from left
to right:
• Motorized Inductor
• Motorized Bandswitch
• B&W 802 Plate Choke
• 3-500Z sockets |
| Side
view of SR-110 |
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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!
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High Altitude
SR-110H
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Added features: |
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• Chimneys
• Large
Tarzan fan on front
• Muffin fan internally or right
• 3-500Z tubes optional |
| Top inside view of SR-110H |
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Front view
of SR-110H |
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(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 |
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(EQP) SR-110HT
Everything you see above plus a pair of factory installed
/ tested Eimac 3-500Z triodes. |
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200 Watt HF "RF
Deck" Amplifier Project
1.6 30 MHz
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• (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 |
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(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.
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| $239 /
Pair - Deck & Power Supply |
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SR-200 Amplifier Channel Strip
Input Boards |

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| 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. |
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| Part Number |
Mfg. P/N |
Frequency |
Price |
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| (EQP) SR-200393-2 |
200393-2 |
2.25 - 2.5 MHz |
45.00 |
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| (EQP) SR-200393-3 |
200393-3 |
2.5 - 3.0 MHz |
45.00 |
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| (EQP) SR-200393-5 |
200393-5 |
3.5 - 4.0 MHz |
45.00 |
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| (EQP) SR-200393-6 |
200393-6 |
4.0 - 5.0 MHz |
45.00 |
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| (EQP) SR-200393-13 |
200393-13 |
14.0 - 16.0 MHz |
45.00 |
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| (EQP) SR-200393-14 |
200393-14 |
16.0 - 18.0 MHz |
45.00 |
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| (EQP) SR-200393-15 |
200393-15 |
18.0 - 20.0 MHz |
45.00 |
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| (EQP) SR-200393-16 |
200393-16 |
20.0 - 22.0 MHz |
45.00 |
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42 MHz VHF Amplifier
6 or 10 Meters? |
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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 |
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(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. |
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X Band - Radar
Transmitter / Receiver |
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(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 |
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SR-110
Complete Amplifiers |
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| 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! |
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2500 - 3000v
Power Supply |
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| 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! |
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ML500M-1
2 - 30MHz RF Amplifier |
ML500M-1 |
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