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RF Concepts 9500 User Manual

Microprocessor controlled hf linear amplifier
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Summary of Contents for RF Concepts 9500

  • Page 3: Product Release 1

    RF Concepts Alpha 9500 Linear Amplifier User Manual www.rfconcepts.com Product Release 1 Document Issue 1.1 February 2010...

  • Page 4: Alpha 9500 Linear Amplifier User Manual

    Alpha 9500 Linear Amplifier User Manual RF Concepts Product Release 1 Alpha 9500 Linear Amplifier User Manual Prepared for RF Concepts by MRH/JH/LJW. To reach technical support or obtain copies of this document, go to www.rfconcepts.com. Copyright © 2010 RF Concepts, LLC. All rights reserved. Specifications subject to change without notice.

  • Page 5: Table Of Contents

    Basic operation 5-1 Operational states 5-2 Tuning modes 5-4 Faults 5-5 5.2 Start Up the Amplifier 5-5 5.3 Tune the Amplifier 5-7 (Optional) Changing antenna settings 5-7 Autotuning 5-8 Manual tuning 5-9 DOCNUMBER 9500 Document Issue 1.1 February 2010 Page iii...
  • Page 6 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Contents Product Release 1 5.4 Program the Amplifier Memory 5-10 5.5 Operate the Amplifier 5-12 6. Operating the Amplifier from a PC ......6-1 6.1 Set Up to Operate from a PC 6-1...
  • Page 7 Procedure 7-1, “Clean the amplifier,” page 7–1 Procedure 7-2, “Replace the tube and fuses,” page 7–3 Procedure 7-3, “Upgrade firmware on the primary board,” page 7–4 Procedure 7-4, “Upgrade firmware on the secondary boards,” page 7–7 DOCNUMBER 9500 Document Issue 1.1 February 2010 Page v...

  • Page 8: Rf Concepts, Llc Product Release 1 Docnumber 9500 Document Issue

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC List of Procedures Product Release 1 DOCNUMBER 9500 Document Issue 1.1 Page vi February 2010...

  • Page 9: Introduction

    1.1 Product Description 1–1 1.2 Product Capabilities 1–2 1.3 Safety Considerations 1–2 1.4 Related Products 1–3 1.5 Assistance 1–3 Congratulations on your purchase of a professional-quality Alpha 9500 linear amplifier. 1.1 Product Description The Alpha 9500 (see Figure 1-1) is an self-contained autotune HF linear power amplifier.

  • Page 10: Product Capabilities

    USB and serial interface allow for remote operations, diagnostics, and firmware upgrades. 1.3 Safety Considerations • Locate the Alpha 9500 where there is good air circulation all around and on top of the cabinet. The unit may become hot during operation. DOCNUMBER 9500 Document Issue 1.1 Page 1–2...

  • Page 11: Related Products

    This operating manual holds information, cautions, and warnings that you must follow to ensure safe installation and operation. Read Chapter 1 before attempting to unpack or operate the Alpha 9500. Failure to perform procedures properly may result in amplifier damage, fire hazard, or electric shock.
  • Page 12 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Introduction Product Release 1 • Go to our website at www.rfconcepts.com and click Support. On this site you can get the following assistance: • FAQs • Legacy equipment information • Manuals •...

  • Page 13: Amplifier Components And Specifications

    (HV) and heater circuits. All other power supplies are regulated. The biasing and tank circuits are similar in most respects to those of the Alpha 9500’s predecessor, the Alpha 77. The unit has thoroughly modern computer-controlled power supply and control circuitry. Extensive safety measures protect the amplifier against most off-nominal conditions.

  • Page 14: Cathode (Input-Match) Board

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Amplifier Components and Specifications Product Release 1 Figure 2-1 Amplifier front and interior Figure 2-2 Amplifier back 2.1 Cathode (Input-Match) Board The cathode board, housed in the tube deck, consists of a set of Pi filters controlled by a set of five relays that are enabled based on the band-switch setting.

  • Page 15: Center-Partition Board

    The center-partition board contains the RF decoupling circuit on the B+ line as well as the crowbar safety circuit. When you remove the top cover of the Alpha 9500, the spring metal of this safety device shorts out the B+ line.

  • Page 16: Display Board

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Amplifier Components and Specifications Product Release 1 Table 2-1 Amplifier Buttons (listed alphabetically) (Continued) Button Purpose Sets the 7-segment display to show the last fault. Also loads new firmware. Sets the 7-segment display to show forward power in W.

  • Page 17: Firmware

    A standard 9-pin RS-232 serial port is provided for control and monitoring and is found on the back of the Alpha 9500. A USB port is also provided. Either port may be used, but only one may be active at any one time.

  • Page 18: Power Supply

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Amplifier Components and Specifications Product Release 1 to override autotaps election and use any primary tap; it may be useful to do so if your line voltage is unsteady or on the edge of a tap setting. For more information, contact RF Concepts technical support.
  • Page 19 RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Amplifier Components and Specifications Mains Board Figure 2-5 Mains board Power-supply functions are split between the mains board and the HV board. The mains board deals mostly with the primary side of the transformer.

  • Page 20: Tube And Tube Deck

    2.10 Tube and Tube Deck The Alpha 9500 uses a single 8877 triode tube. The tube operates well within its published ratings. It is operated in Class AB1, with a plate voltage of 3300 V (nominal, full output, key down) and a cathode voltage of 9.4 V.
  • Page 21 RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Amplifier Components and Specifications Table 2-2 Alpha 9500 linear amplifier specifications (Continued) Parameter Value Cooling Forced air Antenna outputs 4xSO-239 connectors Antenna selection 1 or 2 outputs per band/segment...
  • Page 22 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Amplifier Components and Specifications Product Release 1 DOCNUMBER 9500 Document Issue 1.1 Page 2–10 February 2010...

  • Page 23: Preparing Your Station

    3.2 Limitations of Operation at 90–130 VAC 3–3 3.1 Prepare Your Station The Alpha 9500 is capable of dramatically improving the performance of your amateur station. It is important that you observe good engineering practices to achieve all the benefits of such a station in a safe and reliable manner.
  • Page 24 Use good-quality low-loss coaxial cable of size RG/8 or larger. The Alpha 9500 is intended for a nominal 50-ohm load. With proper matching (50 ohms) between amplifier and feedline, open-wire feeders or lines of other than 50 ohms may be used.

  • Page 25: Limitations Of Operation At 90-130 Vac

    3.2 Limitations of Operation at 90–130 VAC Electrical-power equipment draws twice as much primary current from 120 V mains as from 240-V mains. Therefore, if you operate the Alpha 9500 on typical 120 V/20 A household circuit without exceeding the 20- A circuit rating, you limit maximum peak power output to about 600–1000 W.
  • Page 26 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Preparing Your Station Product Release 1 If your line voltage is below 110 V under load, do not expect to be able to get 1500 W output (see Table 3-1). Table 3-1 Amplifier behavior with nonstandard line voltages...

  • Page 27: Setting Up The Amplifier

    4.6 Connect the Transceiver Keying Line 4–10 IMPORTANT The Alpha 9500 is easy to set up, tune, operate, and maintain. However, failure to carry out each procedure exactly as described in this manual is likely to lead to amplifier damage, which is not covered under warranty.
  • Page 28 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Setting Up the Amplifier Product Release 1 Figure 4-1 Cover screws 3c Rotate the amplifier onto its right hand side. 3d While looking at the bottom, locate and remove the screw (labeled...

  • Page 29: Install The Transformer

    RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Setting Up the Amplifier 4.2 Install the Transformer NOTE • The transformer is very heavy. When moving it, use due caution and handle only by the lifting handle.

  • Page 30: Connect The Transformer

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Setting Up the Amplifier Product Release 1 Figure 4-4 Securing transformer Carefully rotate the amplifier back to its standard orientation. Step 4 4.3 Connect the Transformer Procedure 4-3 Connect the transformer Connect the transformer to the chassis.
  • Page 31 RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Setting Up the Amplifier Figure 4-6 Transformer’s 7-pin HV connector (top) and 2-pin mains connector (bottom) 2b Carefully route the transformer’s HV connector below all of the other bundled wires.
  • Page 32 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Setting Up the Amplifier Product Release 1 2c Align the transformer’s HV connector with the amplifier’s HV board connector, with all pins in their appropriate slots, then gently but firmly push the connectors together so that they are fully mated.

  • Page 33: Connect The Cables

    Connect the power cord. Step 1 WARNING WARNING! To avoid the hazard of a potentially fatal electric shock and/or severe damage to the Alpha 9500 and other equipment: • NEVER operate the amplifier with the cover removed. • ALWAYS use an AC plug that is appropriate for the primary mains voltage, current rating, and configuration.
  • Page 34 WARNING WARNING! Do not attempt to operate the amplifier with the cover removed or placed on the unit without the attachment screws. Doing so damages the Alpha 9500 and may also cause injury or death to the operator. DOCNUMBER 9500 Document Issue 1.1...
  • Page 35 RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Setting Up the Amplifier Place the amplifier in its operating position on a stable surface with Step 4 sufficient space to the rear, sides, and top to allow good air flow and safe placement of cables.

  • Page 36: Set The Input Drive

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Setting Up the Amplifier Product Release 1 4.5 Set the Input Drive You must set the transceiver output power properly. Virtually all damage to date has resulted directly from severe overdrive. The amplifier requires 50-W drive for full rated output.
  • Page 37 RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Setting Up the Amplifier Table 4-1 Popular transceivers (Continued) Transceiver Connection and keying information Yaesu RF — T/R — Connection with the RCA “TX GND” connector and/or DIN “Band Data” connector. For information, see the transceiver user manual.
  • Page 38 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Setting Up the Amplifier Product Release 1 DOCNUMBER 9500 Document Issue 1.1 Page 4–12 February 2010...

  • Page 39: Program The Amplifier Memory

    5.5 Operate the Amplifier 5–12 5.1 Principles of Operation Once your Alpha 9500 linear amplifier is set up as described in the previous chapters, before first use you must tune it for peak RF output and lowest current for the selected antenna port over the range of band segment frequencies to be used.

  • Page 40: Operational States

    It is generally safest to program and operate from user memories. If you have not saved to the user memories, they still contain factory default values. The Alpha 9500 can be in one of seven operational states, listed in Operational states Table 5-1.
  • Page 41 RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Operating the Amplifier Table 5-1 Operational states (Continued) State Description Tube is warming up and HV is present. On 2 (warmup) Press the ON AMP button or send a command from the serial To enter this state: interface.

  • Page 42: Tuning Modes

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Operating the Amplifier Product Release 1 You can tune the amplifier in one of three tuning modes—Default, User Tuning modes 1, or User 2—and from any of these proceed to autotune mode..

  • Page 43: Faults

    RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Operating the Amplifier Table 5-2 Tuning modes (Continued) Mode Description In autotune mode, which you select when the amplifier is in User 1 or User 2 mode, Auto the amplifier initially tunes from stored values and then automatically tweaks the tuning when power is applied.
  • Page 44 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Operating the Amplifier Product Release 1 the amplifier, the amplifier autoselects a band and segment. You can pass up to 1500 W through the amplifier in bypass or the ON1 setting.

  • Page 45: Tune The Amplifier

    You normally should not need over ~60 W input to drive the amplifier to full output. The Alpha 9500 has an autotune feature for tuning to the desired frequency. You can use this feature or turn it off and manually tune the amplifier.

  • Page 46: Autotuning

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Operating the Amplifier Product Release 1 2b Press the desired antenna port twice. 2c While the antenna light is blinking, press the SAVE button. The new antenna port value is now spread across all bands and segments on User 1 or User 2.

  • Page 47: Manual Tuning

    RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Operating the Amplifier Set the transceiver to the desired band/segment frequency. Step 3 Select User 1 or User 2 mode (so that you can save the settings). Step 4 Press the MEMORY/AUTO button to turn on autotune.

  • Page 48: Program The Amplifier Memory

    5–10. Step 8 5.4 Program the Amplifier Memory The Alpha 9500 has 5 memory settings per band per user (Default, User 1, and User 2). Each memory setting holds 3 values: frequency, tune, and load. These capacitor settings are made at the factory by tuning into a 50-ohm load, saving the settings, and migrating them to the appropriate memory bank.
  • Page 49 RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Operating the Amplifier You are expected to optimize the capacitor settings stored in User 1/User 2 memories during installation. Procedure 5-5 Program the amplifier memory Start up and tune the amplifier as described in “Start Up the Amplifier,”...

  • Page 50: Operate The Amplifier

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Operating the Amplifier Product Release 1 5.5 Operate the Amplifier Procedure 5-6 Operate the amplifier Start up and tune the amplifier and program memory as described in “Start Step 1 Up the Amplifier,” page 5–5,...
  • Page 51 COM port. Select Tools > Get fault log. To see a complete list of possible faults, see Chapter 8, “Diagnosing Faults.” • You can optionally control the Alpha 9500 completely from the ® ® Microsoft Windows AR9500 PC application rather than the front panel.
  • Page 52 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Operating the Amplifier Product Release 1 DOCNUMBER 9500 Document Issue 1.1 Page 5–14 February 2010...

  • Page 53: Operating The Amplifier From A Pc

    — 8 data bits, 1 stop bit, no parity bit — No flow control — Straight-through cable • The Alpha 9500 has both a 9-pin serial port and a USB port on the back. Only one of these can be active at a time. DOCNUMBER 9500 Document Issue 1.1 February 2010 Page 6–1...

  • Page 54: Operate From The Pc

    Locate the amplifier’s USB driver (filename CDM-setup.exe) from the Step 1 RF Concepts website or the CD supplied with the amplifier. Determine which PC COM port is assigned to the Alpha 9500. Step 2 The amplifier is normally assigned to COM port 4 or 5. Confirm this by checking the computer properties and going to the PC’s Device Manager...

  • Page 55: Main Window

    RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Operating the Amplifier from a PC Main window From the main window you can: • View a list of available COM ports from the drop-down menu labeled COM Port. Scroll through the list until the port connected to your amplifier is highlighted.

  • Page 56: Simulated Front Panel

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Operating the Amplifier from a PC Product Release 1 Simulated front panel From the simulated front panel you can click any button just as you would press the button from the amplifier itself.

  • Page 57: Options Menu

    RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Operating the Amplifier from a PC Whether or not any of this data is displayed is controlled by options selected in the Options menu. Options menu From the Options menu, if you Select Windows, the following menu appears.
  • Page 58 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Operating the Amplifier from a PC Product Release 1 DOCNUMBER 9500 Document Issue 1.1 Page 6–6 February 2010...

  • Page 59: Maintaining And Upgrading The Amplifier

    7.4 Upgrade Firmware 7–3 IMPORTANT • The Alpha 9500 is extremely easy to set up, operate, and maintain. However, failure to carry out each procedure exactly as described in this manual is likely to lead to amplifier damage, which is not covered under warranty. Damage to other station equipment may also result.

  • Page 60: Retune The Amplifier

    At the factory, the amplifier is tested and tuned into an Alpha 2100 50- ohm dummy load and the correct tune and load capacitor values are stored into the default memory-segment positions.

  • Page 61: Upgrade Firmware

    Occasionally, new firmware for the Alpha 9500 control board becomes available for download from the Alpha website. Go to the Alpha website, retrieve the firmware, and store it on your PC. Then choose one of the following procedures and follow it to install firmware.

  • Page 62: On The Primary Board

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Maintaining and Upgrading the Amplifier Product Release 1 On the Primary Board Procedure 7-3 Upgrade firmware on the primary board With the amplifier plugged into the power supply, turn the amplifier off.

  • Page 63: On The Secondary Boards

    RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Maintaining and Upgrading the Amplifier NOTE: The bootloader menus for setting the COM port and the baud rate are a little quirky. Although it may look as if there are no other options from which to choose, there is a little area on the drop-down menu where you can click to show the other choices.
  • Page 64 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Maintaining and Upgrading the Amplifier Product Release 1 Upgrading the firmware on these boards requires a few more simple steps. The biggest difference with these upgrades is that you must remove the cover and front panel to access these boards.
  • Page 65 RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Maintaining and Upgrading the Amplifier Figure 7-4 Sound generator board Figure 7-5 Stepper motor board Procedure 7-4 Upgrade firmware on the secondary boards IMPORTANT Before you start, review all steps. If you are unsure of any step, contact RF Concepts.
  • Page 66 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Maintaining and Upgrading the Amplifier Product Release 1 WARNING WARNING! Disconnect the AC line cord from the power source before lifting the cover for any reason. Remove the transformer and front panel assembly.
  • Page 67 RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Maintaining and Upgrading the Amplifier Figure 7-8 Programming cable, end 2 Figure 7-9 3-pin header Connect the reset-push-button cable to the 5-pin connector. Step 7 Plug the amplifier in but DO NOT turn it on.
  • Page 68 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Maintaining and Upgrading the Amplifier Product Release 1 On the bootloader, choose the correct filename for the board to be Step 10 upgraded. Board Filename Display Display_Controller_FP_Vx_xx.HEX Mains High_Voltage_Mains_Board_Vx_xx.HEX ound generator Sound_Generator_FP_V .HEX...

  • Page 69: Diagnosing Faults

    For all other faults, resolve the fault as described in Section 8.2, “Fault Codes and Resolutions.” Then press the left ON button to release the fault and press the OPER button to continue. DOCNUMBER 9500 Document Issue 1.1 February 2010 Page 8–1...

  • Page 70: Fault Codes And Resolutions

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Diagnosing Faults Product Release 1 8.2 Fault Codes and Resolutions Fault numbers and descriptions are as follows: Table 8-2 Fault code summary Number Description Gain fault Tap not found Soft Ip trip...
  • Page 71 RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Diagnosing Faults The amplifier attempts to automatically clear this fault after 4 seconds and, if the key line is still asserted, go into OPERATE mode. If the fault reoccurs, this process repeats indefinitely.

  • Page 72: Fault Code 2

    Resolution value with the reported value in the amplifier telemetry stream. This is most easily done by running the Alpha Remote/AR9500 PC application. The line voltage is reported in the rectangle around the meter selection buttons. If necessary, this can be done with the amplifier plugged in but in the OFF condition.

  • Page 73: Fault Code 3

    RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Diagnosing Faults Tap number Min voltage Max voltage 189.9 209.9 210.0 229.9 230.0 265.0 The amplifier selects the tap appropriate to the range reported as being measured. If the measured value does not fall into one of the 5 ranges, the amplifier does not turn on unless you activate manual tap selection.

  • Page 74: Fault Code 6

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Diagnosing Faults Product Release 1 Fault code 5 Vp under voltage. Description The mains board monitors the plate voltage (HV, Vp) for approximately Explanation 2 seconds after the amplifier is turned fully on (ON 2).

  • Page 75: Fault Code 9

    RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Diagnosing Faults 2. If the fault does not clear, turn the amplifier off, unplug it from the AC mains., plug it back in, and power it up again.

  • Page 76: Fault Code 11

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Diagnosing Faults Product Release 1 occludes the opto-interrupter. This position is registered as a 0 (zero) for the load capacitor, and represents the minimum attainable capacitance for that capacitor. Maximum capacitance is attained when the stepper motor controlling the load capacitor has taken 100 steps.

  • Page 77: Fault Code 12

    RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Diagnosing Faults 3. Ensure that the external fan is operating. The fan is at the right rear of the amplifier, covered by a wire grill. It should start to rotate in the ON AMP condition.

  • Page 78: Fault Code 15

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Diagnosing Faults Product Release 1 2. Unplug the amplifier, plug it back in, wait for at least 30 seconds, then turn it back on. Fault code 15 Grid current too high.

  • Page 79: Fault Code 19

    RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Diagnosing Faults Fault code 19 Unauthorized frequency. Description The amplifier is not authorized to transmit on that frequency. Amateur Explanation equipment sold in the United States is not authorized to transmit between 26 and 28 MHz.
  • Page 80 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Diagnosing Faults Product Release 1 DOCNUMBER 9500 Document Issue 1.1 Page 8–12 February 2010...
  • Page 81 Decibel. Logarithmic unit of measure of the dB — power of sound relative to a reference level. Radio that provides RF drive for the exciter — Alpha 9500 to operate. The transmitter portion of the transceiver. DOCNUMBER 9500 Document Issue 1.1 February 2010...

  • Page 82: Docnumber 9500 Document Issue

    Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Page Terminology Product Release 1 Federal Communications Commission. Frequency-shift keying. Type of FCC — FSK — For more information, go to www.fcc.gov. frequency modulation in which information is conveyed by shifts in the output frequency Frequency modulation.
  • Page 83 RF Concepts, LLC Alpha 9500 Linear Amplifier User Manual Product Release 1 Terminology Milliampere. 10-6 A. Megahertz. 106 Hz. mA — MHz — Operate. Printed circuit board. Board that OPR — PCB — mechanically supports and electrically connects electronic components.
  • Page 84 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Page Terminology Product Release 1 adjacent node (minimum). Measure of antenna and feedline efficiency. Transmit /receive. Device that has both a transmitter T/R — transceiver — and a receiver within the same circuitry or chassis.
  • Page 85 RF Concepts, LLC Product Release 1 Schematics Schematics NOTE: The following pages contain detailed schematics for the Alpha 9500 linear amplifier. DOCNUMBER 9500 Document Issue 1.1 February 2010 Page Schem–1...
  • Page 86 Alpha 9500 Linear Amplifier User Manual RF Concepts, LLC Page Schematics Product Release 1 DOCNUMBER 9500 Document Issue 1.1 Page Schem–2 February 2010...

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