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Chapter 6 – How to Interface to your Linear Amplifier

PTT Input

PTT Output

Most modern Linear Amplifiers have a connection for PTT input for keying the Linear. Apache Transceivers 
include a back panel connection for this purpose and it is activated by the PowerSDR software based on menu 
preferences.  On the ANAN-200D Linear Amplifier PTT OUT it is pin 1 of the AUX I/O Ribbon connector.

FET

The PTT OUT is a common DRAIN 2n7002 type FET transistor as shown in the schematic for the ANAN-200D.

The heavy duty type FET is best used to switch 

25vdc

 and 

800

ma [or less). Exceeding these values may 

damage the PTT OUTPUT circuit.

How to test your PTT Linear Amplifier circuit 

BEFORE 

connecting your Apache Transceiver.

Power your Linear, connect the control cable to your linear but do 

not

 connect the other end to your 

Apache Transceiver

Using a 

DC Voltmeter,

 measure the voltage between the center pin and the outer connection of the 

cable. This must be less than 

25vdc

.

Connect a 

DC Ammeter

 between the center pin and the exciter connection of the cable. This should 

ACTIVATE the Linear Amplifier and give you a clear measurement of the current requirements. The 
ANAN-200D PTT circuit should not draw more than 

800ma

.

 If either of these values are out of the required range, then use an external keying interface. There are 
many keying interfaces available from many sources such as MFJ, Elecraft, DX Engineering.

Important

: Connecting a Linear Amplifier that does not meet the above voltage and current 

requirements is likely to cause damage to the Apache Transceiver linear switching transistor and 
extreme cases, serious damage to other parts.  Damage to the radio caused in this manner is not 
covered by Warranty.

Various Linear Amplifier Keying ISOLATION adapters are available

http://www.dxengineering.com/search/product-line/kd9sv-products-sv-kr-keying-relays

http://www.ameritron.com/Product.php?productid=ARB-704

http://www.sultantronics.com/product.html

http://stores.ebay.com/radiodan-w7rf?_trksid=p2047675.l2563

ALC

K2UE has written a helpful document about how he uses ALC with his Apache Transceiver. You can find  it in 
the Apache Yahoo Group FILES section:  

https://xa.yimg.com/df/apache-labs/Insta%26+Use.pdf

For more information about suitable couplers from the KC9XG Yahoo Group Files section:

https://xa.yimg.com/df/KC9XG-SDR/PSSamplersCouplers.pdf

Copyright Apache Labs © ANAN-200D

39

June 22, 2015 

Summary of Contents for ANAN-200D

Page 1: ...D and ANAN 200D in reference to the Apache Labs Transceiver products http www apache labs com In cooperation with VK6PH NRØV W5WC K5SO and the OpenHPSDR Hardware and Software Projects http openhpsdr org all images and manufacturer data is copied here with permission of the owner Copyright Apache Labs June 22 2015 ...

Page 2: ...Apache Labs Copyright statement goes on this page Copyright Apache Labs ANAN 200D 2 June 22 2015 ...

Page 3: ...panel 13 Chapter 2 Quick Start Instructions 14 Hardware Setup 14 Software Setup 15 Windows Installation 15 Chapter 3 How to operate SSB Phone 22 Connecting a suitable Microphone 22 MIC Adapters 22 Selecting Transmit Profile 24 Adjusting mic gain 24 Transmitting 26 Tune 26 VOX 26 Transmit Filter 26 HPF LPF Filters and switching in ANAN Transceiver 27 Antenna Control menu allows you to control the f...

Page 4: ... Chapter 8 How to install a new version of PowerSDR software 44 Please refer to the Quick Start Software Installation information in Chapter 2 44 Instructions to load independent versions on a single PC are summarized here 44 Chapter 9 How when to install a new version of Apache Firmware 45 HPSDRBootloader 45 Pointers to reference materials 46 Apache Labs International Support 46 Apache Yahoo Supp...

Page 5: ...essing 56 Apache Labs ANAN 10 100 Hermes PCB 57 ANAN 100 jumper locations 58 ANAN 100 PA Filter PCB 59 ANAN 200D PA and Filters 60 Apache Labs ANAN 10 100 Block Diagram courtesy VK6PH 61 Copyright Apache Labs ANAN 200D 5 June 22 2015 ...

Page 6: ...Errata List of changes to the document Copyright Apache Labs ANAN 200D 6 June 22 2015 ...

Page 7: ...equipment with the exception of amplifiers and scanning receivers are exempt from certification however must conform to rule 97 which states that harmonic and spurious emissions must be below 43dB of the transmitted out up to 30MHz and 60dB beyond that Apache Labs Products CE and RTTE Certified CE EC Radio and telecommunications terminal equipment RTTE Certification We are pleased to announce that...

Page 8: ...raded since the introduction of the ANAN 200D The Hermes Transceiver board has a small Switching Mode Power supply on board the PCB The SMPS provides a convenient and efficient way to drop from the 13 8vdc supply voltage to the 3 3vdc needed by several of the Integrated Circuit chips Ventilation holes in the bottom and back panel of the ANAN 200D must be clear of obstructions so that the internal ...

Page 9: ...ents Intel i3 2 8Ghz or better recommended 4GB Ram or more recommended 1280x1024 display screen or higher resolution recommended Windows XP or newer It is possible that some older machines will not give satisfactory performance regardless of processor speed Computer with Full Duplex Ethernet NIC card capable of 1000 baseT Gigabit Ethernet Full Duplex Ethernet switch or router with 1 free 1000Mbs E...

Page 10: ...T Gigabit switch is recommended An Ethernet HUB will not work properly and is not recommended Simple network setup The OpenHPSDR ANAN Transceivers are designed to work via Ethernet cabling on a Local Area Network or b directly connected to your Windows PC Ethernet simplifies the installation and configuration of hardware and software making the installation basically plug and play No sound card in...

Page 11: ...stereo plug Note If a mono plug or a shorted stereo plug is wired into the rear panel AUX IO connector damage will occur to the audio output IC Do NOT short these stereo pins or connect either side to ground ANAN Recommended Software requirements Windows XP or later Win7 or newer recommended Microsoft NET 4 0 Framework or later required OpenHPSDR PowerSDR Windows XP or Windows 7 PowerSDR KISS Kons...

Page 12: ...ANAN Front Panel Copyright Apache Labs ANAN 200D 12 June 22 2015 Power Switch Ethernet MIC 3 conductor jack Key Headphones FPGA Activity Power on ...

Page 13: ...ctor 9 Transverter Rx 2 Balanced Speaker Out 10 Ext 1 3 Rx 2 11 Ground Lug 4 ANT 3 12 Transverter Tx 5 ANT 2 13 10Mhz input 6 ANT 1 14 Push to Talk OUT 7 Bypass 15 Accessory I O connector 8 Ext 2 ANAN back panel Copyright Apache Labs ANAN 200D 13 June 22 2015 ...

Page 14: ... openings on the bottom or rear panel of the ANAN Transceiver are blocked Allow room for airflow between the housing and other equipment Connect the supplied 13 8VDC cable to the rear panel power connector and to a filtered 13 8VDC 5 power supply capable of providing up to 7A Connect a suitable ground cable to the rear panel ground terminal and to a suitable RF ground in accordance with good amate...

Page 15: ...w to install multiple independent versions of PowerSDR Execute RUN to start the Installer at this time Note You may be asked to install the full Microsoft NET 4 x Framework at this time if the Installer determines that your PC does not have the necessary NET full 4 0 version installed If you receive this message chose O K then you will get a dialogue that will indicate that OpenHPSDR PowerSDR inst...

Page 16: ...Once you have Microsoft NET 4 0 installed successfully you can run the OpenHPSDR PowerSDR installer again to complete this process See the example above Copyright Apache Labs ANAN 200D 16 June 22 2015 ...

Page 17: ... This may take several minutes on a slow computer Connect your Transceiver to your Power Supply using the supplied fuses Turn on your power supply Push the POWER ON button on the ANAN Transceiver The IDLE receiver current of the ANAN 200D is approximately 800ma 1 8A Open the PowerSDR application then press the POWER button on OpenHPSDR PowerSDR Wait a few seconds for Network Discovery and then cli...

Page 18: ...r Display speed in frames per second etc Go to GENERAL Hardware Configuration tab and note the IP Address and MAC address that are read from the ANAN Transceiver Transceiver Note if the IP ADDRESS is 0 0 0 0 then the software is not communicating with the Transceiver you must check your LAN connection OpenHPSDR PowerSDR OpenHPSDR software has not been started Power button on the rig has not been a...

Page 19: ...e will be set automatically by your network router DHCP server or if connected directly to your PC the IP address will be assigned by the APIPA process WHICH MAY TAKE UP TO SEVERAL MINUTES TO ASSIGN AN IP ADDRESS If your LAN is properly configured the ANAN Transceiver board IP ADDRESS and MAC ADDRESS should be automatically be detected and assigned An incorrect default value is 169 254 1XX XXX Ope...

Page 20: ...The cluttered and dense Chicago AM Broadcast band shown using 3 x 384khz for RX1 Copyright Apache Labs ANAN 200D 20 June 22 2015 ...

Page 21: ... your antenna s have a resonant 2 1 SWR an external tuner should be used to optimized antenna SWR and performance The Transceiver provides limited isolation between the Ant 1 Ant 2 and Ant 3 connections by sending the signal to ground and attenuating the receivers input during transmit Additional attenuation can be selected via the ATT to TX setting on the Ant Filters tab in PowerSDR MRX Settings ...

Page 22: ...C Adapters A Ham style multi pin microphone requires an adapter Various adapters are readily available or can be wired to the Apache 1 8 Stereo style MIC socket http www ebay com itm like 191566170362 lpid 82 chn ps http www gigaparts com Product Lines Microphone Adapters Icom Mic Adapter for Apache Labs Transceivers html The original ANAN Users Guide has several detailed paragraphs about adapters...

Page 23: ... the audio The frequency response of the filter is tailored to the response curve that has been set LEVELER If activated the specified leveler gain is applied to the audio if when the signal level is running below the leveler s output target amplitude I currently have the output target set to 0 4 dB Why not 0 dB The slight positive bias is beneficial for upcoming features Note NOT the same algorit...

Page 24: ...luded profiles to your liking You can recall saved profiles at a later time Adjusting mic gain The internal jumpers JP4 JP5 and JP6 on the Hermes board need to be set properly for the type of microphone used The default is a simple Condenser mic plugged into the front MIC jack See the reference section of this document for the jumper settings or refer to the document by Phil Harman VK6PH http svn ...

Page 25: ...not be achieved with the slider at the extreme right go to the Setup transmit tab lower left check 20db mic boost and try again to adjust the MIC gain control on the main OpenHPSDR PowerSDR window for 0 db on voice peaks If you are still unable to achieve 0 db on voice peaks a Check your JP4 JP5 and JP6 jumper settings on the Hermes board b Try a different mic To enable or disable COMPRESSION you ...

Page 26: ... wish to have a higher voice level cause the transmitter to key Set the delay to cause the VOX to de key the transmitter after not hearing voice for Delay ms milliseconds Use this with care Local noises dog barking TV playing door bell computer sounds can cause your transmitter to key when you do not want this to happen Extreme cases can cause your transmitter to key for excessive periods of time ...

Page 27: ...path The values in the up down boxes control the frequency ranges when these filters are automatically selected The 6m BPF LNA bypass check mark controls the 6 meter low noise amplifier and filtering The ByPass 55mhz HPF check mark when enabled bypasses all high pass filters The active buttons displayed between the HPF and LPF show which filters are currently active The Auto Manual radio buttons s...

Page 28: ...on inserts attenuation in the receiver when the ANAN is transmitting This can prevent or reduce the ADC Receiver overload warnings during transmit RX 1 Out on Tx This option switches the receive path from ANT n to the rear panel Bypass connector Disable ANAN PA only functional via the XVTR form ANAN 200D users may wish to manually calibrate the Transmitter Power Output settings within OpenHPSDR Po...

Page 29: ...alog Software Dxzone Software Catalog W1HKJ Fldigi VSP Com0Com RigCAT Omni Rig VAC VB Audio W1HKJ Fldigi http www w1hkj com FldigiHelp 3 21 html index html Virtual Audio Cable or VB AUDIO connections can easily be accomplished with the 25 40 program called VAC or the VB AUDIO virtual audio cable VAC is available here http software muzychenko net eng vac htm download VB Audio is available here http...

Page 30: ...can be adjusted with the ZOOM settings Sample Rate and SETUP DISPLAY RX1 or RX2 Fast Fourier Transform Size min to max Bin width Iambic A B Select Iambic A or B from the Settings DSP CW menu Note Unselecting Iambic allows you to use the Paddle input in Bug mode or with a Straight Key connected to the DAH paddle input Copyright Apache Labs ANAN 200D 30 June 22 2015 ...

Page 31: ...side to the ring and the dash side to the tip If a straight key is used this should be connected between the sleeve and the tip of the plug PowerSDR Software enables the dot and dash connections to be reversed via a menu selection above The dot and dash connections are connected to a 3 3vdc via a 1k resistor If you find that your DAH and DIT paddles are reversed there is a very convenient SETUP ch...

Page 32: ...ER FREQUENCY or TX FREQUENCY by checking the boxes on the main screen Those convenient vertical yellow marker lines are really great when you are working split The SPEED of the internal Iambic Keyer is shown at the top of this picture Set Drive Level Set the DRIVE LEVEL slider to 50 mid range Copyright Apache Labs ANAN 200D 32 June 22 2015 ...

Page 33: ... comfortable operating speed QSK Do not expect fast QSK At a later time you can adjust SAMPLE RATE DSP buffer sizes and DELAY for faster T R when you are more familiar with the PowerSDR software There are good references for QSK at these websites http anan 200D wikidot com http www w1aex com anan anan html https groups yahoo com neo groups KC9XG SDR info https sdrzone com Copyright Apache Labs ANA...

Page 34: ...you have more experience with your new Transceiver Note the Antenna Control menu allows you to control the following options 1 Software SWR Protection will reduce power output when high SWR levels are detected 2 Disable on Tune Pwr 10W will disable Software SWR protection when the Tune power level is less than 10 watts The Tune power level can be set on the Setup Transmit tab 3 ATT on TX This opti...

Page 35: ...ill be undisturbed by the MultiRx and will continue to receive it s independent band and frequency Take note of the Multi and Rx2 controls in the main Window of PowerSDR Direct numeric input Keyboard commands see Setup Keyboard menu Point and Click with Mouse The mouse can be used to tune signals on the Waterfall or Panadapter Select an active amateur band by clicking on one of the band buttons lo...

Page 36: ...UN function only works within a frequency range equal to the sample rate IOW if the selected sample rate is 384khz and RX1 panadapter is 1 MHz wide CTUN will only function within the center 384khz of the panadapter or waterfall display DUP The PowerSDR DUP DUPLEX button enables RX1 reception during transmit allowing the user to view the transmitted RF signal in the Panadapter The ANAN 200D transce...

Page 37: ...wattage on the main screen display The TX display is in the upper right corner of the main window Select various meter options to see which one suits your operating style I frequently use SWR and OUTPUT WATTS when on CW Copyright Apache Labs ANAN 200D 37 June 22 2015 ...

Page 38: ...erSDR default PA CALIBRATION values are usually very good for most Apache Transceivers Note the Drive Level is a percentage and not the numerical watts output Enjoy your first QSO and be sure to share the news with all the Hams on the Apache Yahoo Group https groups yahoo com neo groups apache labs info Copyright Apache Labs ANAN 200D 38 June 22 2015 ...

Page 39: ...u a clear measurement of the current requirements The ANAN 200D PTT circuit should not draw more than 800ma If either of these values are out of the required range then use an external keying interface There are many keying interfaces available from many sources such as MFJ Elecraft DX Engineering Important Connecting a Linear Amplifier that does not meet the above voltage and current requirements...

Page 40: ...n be accomplished using the Open Collector Output transistors available on the AUX I O Connector on the back panel DDUTIL VK6PH example OpenCOllector BCD keying This is an example provided by Phil Harman VK6PH of how to code the OpenHPSDR PowerSDR OpenHPSDR Power_mRX program to give a BCD binary coded decimal output for control of external equipment such as band information for a Linear Amplifier ...

Page 41: ...away from the offending transmitters Some of the IMD is less visible on Panadapters because it falls IN BAND i e within the bandwidth of the transmitted signal This adds distortion to the signal Fortunately several techniques have been developed to improve the linearity of analog amplifiers and thereby reduce the IMD levels that they generate One such method is Predistortion making the amplifier s...

Page 42: ...and graphics pfd document Introduction and explanation by Warren Prat NRØV please take the time to read and print out this excellent document You will have the best results and enjoy improved signal quality and performance by following Warren s instructions Copyright Apache Labs ANAN 200D 42 June 22 2015 ...

Page 43: ...mitted signal displayed with the primary and odd harmonic peaks PureSignal will adjust your ATT on Tx for an optimal value and then in just a few seconds it will lower your 3rd 5th 7th harmonic peaks to a surprisingly lower level PureSignal can optimally adjust unwanted IMD by as much as 45dbc PureSignal will continue to optimize your signal as you speak in a normal voice Users who have a Linear A...

Page 44: ...s in the even that you do not with to continue with the latest version of PowerSDR Instructions to load independent versions on a single PC are summarized here Go to the Properties of the shortcut At the end of the Target you can add the new directory path using the command line argument datapath directory path To create a new directory for the ANAN 200D radio I use the name PowerSDR ANAN_10 like ...

Page 45: ...ilities is available on the OpenHPSDR Download webpage http openhpsdr org download php Firmware for the ANAN 200D is issued infrequently Apache Labs installs the latest Firmware in each Transceiver at the Factory The Firmware is stable and will operate smoothly without any maintenance required However in the event that there is an update to add new features or improve performance you should famili...

Page 46: ...dr org The OpenHPSDR archives may also be searched here http lists openhpsdr org mmsearch cgi hpsdr openhpsdr org The latest version of the OpenHPSDR User Manual can be obtained from http openhpsdr org documents php Revision 1 9 Author Phil Harman VK6PH Apache Service and Repair 1023 Tower B4 Spaze I Tech Park Sector 49 Sohna Road Gurgaon 122001 Haryana India Tel 91 0124 4245173 4 5 10AM 6PM IST E...

Page 47: ...be required Multiple independent xml databases Thank you Doug W5WC for this important information Go to the Properties of the shortcut At the end of the Target you can add the new directory path using the command line argument datapath directory path To create a new directory for the ANAN 200D radio I use the name PowerSDR ANAN_10 like this start datapath appdata FlexRadio Systems PowerSDR ANAN_10...

Page 48: ... settings 6 Select the Transmit antenna ANT1 where you connected the Dummy Load 7 Select the PA settings TAB on the Setup menu window The PA Settings TAB allows you to set calibrate the ANAN 200D Power Amplifier gain by band dB Power Output per Band for each of the available Ham Bands There is an up down gain control for each band which regulates the Power Amplifier output for that band As you inc...

Page 49: ...s 2000 and later there is a specific interrupt handling mechanism When a device driver cannot process data immediately in its interrupt routine it schedules a Deferred Procedure Call DPC Microsoft defines them as A Deferred Procedure Call DPC is a queued call to a kernel mode function that will usually be executed at a later time DPCs are used by drivers to schedule I O operations that do not have...

Page 50: ...een defective within the warranty period stated above Our Warranty does not imply any obligation other than herein stated Any implied warranties including but not limited to fitness for a particular purpose are limited in duration for the above one year period We shall not be liable under this warranty or any implied warranty for loss of use of the product or for any other consequential loss or da...

Page 51: ..._Skins K I S S_Konsole from OpenHPSDR team http svn tapr org repos_hpsdr_kiss branches K9TRV KISSKonsoleUnified VK6PH has added new VNA capabilities to FPGA and K I S S codes ghpsdr3 QtRadio from John Melton GØORX N6LYT and a new branch by Alex Lee Heterodyne MAC OS by Jeremy McDermond OpenHPSDR software repository and information http openhpsdr org download php Copyright Apache Labs ANAN 200D 51 ...

Page 52: ...ing power Bill Tracey KD5TFD Component sourcing and kitting Lyle Johnson KK7P significant contributor to hardware development Scotty Cowling WA2DFI Parts procurement Graham KE9H Hermes PA improvements Doug W5WC for his adaptation of FLEX OpenHPSDR PowerSDR to Hermes Joe K5SO for his many software contributions George Brykit K9TRV for his installer and other software contributions Plus numerous oth...

Page 53: ...e CORDIC then the sine and cosine values it generates are so accurate that we get perfect I Q signals out in terms of how well the amplitudes are matched and how close to 90 degrees apart they are As I said it is a successive approximation approach so it takes about 20 iterations to get the accuracy we need In which case there is a delay of 20 122 88MHz from the time the RF appears at its input to...

Page 54: ...eaker jack contains the Left Channel speaker pair The Right Channel speaker pair is on pin 6 and Pin 19 These are balanced outputs Do NOT ground these lines The OpenHPSDR PowerSDR Setup ANAN Ctrl tab numbering scheme for the J16 Receive and transmit pins does not represent the actual pin numbers ACC IO Port pinout name schematic pin numbers 1 Open drain PTT output 25vdc 800ma 25 2 OC6 User open co...

Page 55: ...tput 4 20 17 OC1 User open collector output 2 18 18 User Digital input 2 Connected to 3 3V via 1K pullup resistor 16 19 Right channel speaker pair with pin 6 14 20 User Analog input 2 0 3V max 12 21 Analog Ground 10 22 Right channel line Out 8 23 Left channel phones output 6 24 not implemented not implemented 25 Analog Ground 2 Copyright Apache Labs ANAN 200D 55 June 22 2015 ...

Page 56: ...robably get an APIPA address If a DHCP server fails APIPA allocates IP addresses in the private range 169 254 0 1 to 169 254 255 254 When the DHCP server is again able to service requests clients update their addresses automatically In APIPA all devices use the default network mask 255 255 0 0 and all reside on the same subnet APIPA is enabled on all DHCP clients in Windows unless the computer s R...

Page 57: ...Apache Labs ANAN 10 100 Hermes PCB Copyright Apache Labs ANAN 200D 57 June 22 2015 ...

Page 58: ...ANAN 100 jumper locations Copyright Apache Labs ANAN 200D 58 June 22 2015 ...

Page 59: ...ANAN 100 PA Filter PCB Copyright Apache Labs ANAN 200D 59 June 22 2015 ...

Page 60: ...ANAN 200D PA and Filters Copyright Apache Labs ANAN 200D 60 June 22 2015 ...

Page 61: ...Apache Labs ANAN 10 100 Block Diagram courtesy VK6PH Copyright Apache Labs ANAN 200D 61 June 22 2015 ...

Page 62: ... ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ____...

Page 63: ...d Repair 46 Apache Yahoo Support Group 46 APIPA 56 Apollo 52 appdata 44 Audio Chain How it works 23 BACKUP 44 Bill Tracey KD5TFD 52 Break in Delay 33 CCS Continuous Commercial Service 30W 8 29 CE and RTTE Certified 7 CFIR 53 Chapter 1 Introduction 9 Chapter 2 Quick Start Instructions 14 Chapter 3 How to operate SSB Phone 22 Chapter 4 How to operate Digital modes 29 Chapter 5 How to operate CW 30 C...

Page 64: ... caused in this manner is not covered by Warranty 39 DC Ammeter 39 DC Voltmeter 39 Declarations of Conformity 7 Direct numeric input 35 direct down conversion DDC receiver 9 direct up conversion DUC transmitter 9 Do not expect fast QSK 33 Doug W5WC 52 DOWNWARD EXPANDER 23 Drag Mouse 36 DUP 36 Dxzone Software Catalog 29 Extended 56 FILTER 23 Firmware revision 56 Full Duplex Ethernet switch 9 ghpsdr...

Page 65: ...41 LOCK VFO 36 Lyle Johnson KK7P 52 MAC address 56 manual calibration procedure 48 Methods for tuning your Transceiver 35 Methods for tuning your Transceiver to a frequency 35 MIC Adapters 22 MIC GAIN 23 microphone terminated in 3 5mm 11 Microsoft NET 4 x Framework 15 Minimum Requirements 9 NON linearity 41 OpenHPSDR 45 OpenHPSDR Group 46 OpenHPSDR Software 51 openhpsdrJ 11 Operation tips 8 Origin...

Page 66: ...erating frequency 32 Selecting Transmit Profile 24 Set Drive Level 32 Set the DRIVE LEVEL 32 Setting up PowerSDR for Phone Operation 24 Sidetone Level 34 Software and download information 11 Software Setup 15 suitable couplers 39 43 The CORDIC Algorithm 53 Transmit Filter 26 Transmitting 26 Tune 26 TUNE button to see your SWR and OUTPUT 37 Tuning 35 TWO TONE button 43 Updates to the PowerSDR softw...

Page 67: ...42 Warren Pratt NRØV PureSignal 41 Windows Installation 15 XML DataBase 44 9 15 23 36 46 49 51 Linear Amplifiers properly equipped with an RF Signal Sampler 43 Automatic Tx Attenuation 43 appdata 44 Copyright Apache Labs ANAN 200D 67 June 22 2015 ...

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