Kenwood TS990S HF Transceiver

Kenwood TS990S HF Transceiver

The Kenwood® TS-990S featuring a dual TFT display and dual receiver covers the HF amateur bands plus 6 meters. It also features narrow-band roofing filters on the main receiver in a full down-conversion configuration. The TS-990S achieves the highest basic reception performance of any radio in the TS series, through the careful selection of circuits, components and accelerating analysis using triple DSP configuration. RF power is adjustable from 2 to 200 watts. This radio features a built-in automatic antenna tuner and built in AC power supply. It has a serial port, USB ports and Ethernet port.

TS-990S_front TS990S_rear_GER


Kenwood TS990S HF Transceiver

Paul Leicester | MØFOX | Chesterfield UK | IO93HE | Icom IC-7300

FTDX 1200 HF/50MHz Transceiver

Continuing the Yaesu “FT DX” Legacy of Excellence established decades ago, the FT DX 1200 is designed for the casual operator as well competitive operating situations, whether you primarily operate in Contests, chase DX or enjoy Field operating. The High Frequency Design Technology it has inherited ensures “Best in Class Performance”.
 
The FT DX 1200 provides up to 100 Watts on SSB, CW, FM, and AM (25 Watts carrier) and a rugged state of the art highly balanced receiver circuit configuration for top performance on today’s crowded bands. Similar to the high-end “YAESU FT DX” series, it uses 32-bit high speed floating point DSP for renowned proven performance.
 
A built-in 4.3-in TFT wide full color High Resolution Display with loads of information provides superior operability and visibility for the FT DX 1200 user. A Spectrum Scope located just below the LCD display gives the operator all the information needed to place them at the right place on the band with the right receiver set-up to have a satisfying experience with a casual QSO chat or while digging out a rare desired weak signal contact.
 
Optional Accessories are offered to provide very desirable additional features that make the FT DX 1200 a flexible true high performance platform for all hams – no matter what mode they chose to operate.

160 through 6 Meters – SSB/CW/FM/AM/Digital

With efficient dimensions of 14.4″ x 4.5″ x 12.3″ (W x H x D) and weighing in at only 20.9 pounds, the FT DX 1200 is a solidly packed transceiver ready to give very high performance on all Amateur Radio bands from 160 to 6 meters.

• General Coverage Reception from 30 kHz to 56 MHz

• FM & AM – Wide and Narrow modes included

100 Watts of Solid Performance

The RF Final Amplifier produces a clean 100 watt (some modes less) transmit signal. A large heat sink is combined with the die cast aluminum chassis for efficient heat dissipation. A cooling fan located beside the final amplifier and the TX Low Pass Filter ventilates the heat away from inside of the transceiver cabinet. This large axial flow fan is mechanically isolated from the chassis to reduce vibration and noise. The speed of the fan is continuously controlled by the temperature of the PA amplifier; starting at 40 degree C.

Antenna Tuner Included

High Speed Automatic Antenna Tuner included. The antenna tuner uses LC switching. It has a large capacity 100 channel memory; the tuning data is automatically memorized to reduce tuning time when changing frequency.

Smooth Main Tuning Knob Feel

The Main Tuning Knob, made from marchined aluminum parts, has the solid feeling of a largre flyweheel, while being nimble and smooth in operation. Each user may set his/her favorite torque feeling of the Main Dial rotation.

USB Capable

The FT DX 1200 can be connected to a PC with a USB cable through the use of an optional SCU-17 Interfeace Unit. This unit will support CAT, USB Audio In/Out, TX control (PTT, Key, Shift), and firmware updates.

Remote Control From A Distant Location

External control (CAT) is possible using Serial Port or the optional SCU-17 USB Interface Unit. This feature means the FT DX 1200 can be remotely controlled from a distant location!

Big TFT Full-Color Display For Superior Operability and Visibility

The FT DX 1200 presents a wide view angle, high contrast LCD 4.3 inch TFT impressive full color display that provides a convenient view of the radio’s working functions. Superior operability is realized with this convenient display. It permits excellent visibility from different viewpoints. Even with the many FT DX 1200 features and functions, the TFT display makes operation of the radio easy and comfortable.

• A Block Diagram Displays RX Signal Path
• Choose Analog Type or Bar Graph Meter
• Separate VFO-A, VFO-B Transmit and Receive Frequency Display
• Bandwidth of the spectrum scope: 20kHz, 50kHz, 100kHz, 200kHz, 500kHz, or 1MHz
• TX and RX markers appear during “spit” operation
• Level Indicator
The function names and the setting levels of the following functions are shown in the TFT main display when a function knob is rotated: Clarifier, Microphone Gain, Speech Processor, SHIFT, WIDTH, KEYER SPEED and CONTOUR
• Cursor Keys
Six keys that are used frequently in normal operation are located at the left side of the TFT display. Other functions can be operated by pressing the “SCOPE” key which changes the “Spectrum Scope screen” to “Function Key Display screen”. Even if the radio is turned off, the last operated Key Function is memorized and highlighted.
• Spectrum Scope
The FT DX 1200 has a standard automatic sweeping high speed spectrum scope in line with dial operations. The spectrum scope function that allows for an instant view of the signals, their strengths and distribution within a band is supplied as standard. The spectrum scope sweep function has two modes available: the normal mode, where the band is swept once when the SELECT button is pressed, and the AUTO mode where the band is automatically swept at preset intervals. No receive audio is generated during sweeping, but as sweeping is done at an extremely high speed this is a brief instant of approximately 300 msec. If the operator quickly operates the main dial to make a big frequency change in AUTO mode, an automatic sweep is performed and the display is refreshed. This enables frequency tuning while checking the spectrum in real time. The moment tuning is halted the receive frequency audio is resumed; as no sweeping is performed during slow frequency changes to tune in to another station, there is no interruption to the receive audio. Operation therefore feels natural and is without stress. Additonal scope features include:
1. Six different options: 20 kHz, 50 kHz, 100 kHz, 200 kHz, 500 kHz and 1 MHz.
2. TX and RX markers are displayed in the spectrum scope, enabling the user to confirm the relationship between the receive and transmit frequencies at a glance. This is particularly useful in the case of split operation.
3. Full TFT screen signal spectrum can be viewed in detail by simply pressing the SCOPE key.
• Optional FFT-1 Unit provides the following additional features:
1. AF-FFT (Audio Frequency Fast Fourier Transform) scope.
This AF-FFT function was first demonstrated in the FT DX 9000 series. With this Scope, the audio characteristics of the received signals; the effect of adjusting the RX IF filter performance; and utilizing the QRM rejection features, may be visually observed. It is also possible to observe the TX audio characteristics of your own signal while using the Monitor function. This is very effective for tuning the parametric equalizer for voice characteristics and the microphone audio.
2. RTTY/PSK31 Encode Decode
3. CW Decode
4. CW Auto Zero-in

Superior Triple Conversion Receiver

The FT DX 1200 high performance triple conversion receiver circuit structure enables elimination of unwanted signals through filters at each stage as well as optimized gain distribution.

Top Performing Receiver RF Front End

The receiver front end is exposed to strong signals directly from the antenna. Yaesu engineers carefully selected and tested active elements like the RF amplifier, but also passive circuit components and coils, so that no spurious or unwanted signals are created. By pressing the ATT key on the front panel, the operator picks from four selectable stages of attenuation to attenuate interfering strong signals. The effect of strong out of band interfering signals on the RF amplifier is further reduced by significant attenuation through 8 band pass filters in the FT DX 1200.

Effective QRM and QRN Rejection

Effective QRM rejection is achieved from the FT DX 1200 IF DSP. The 32-bit high speed floating decimal point DSP, TMS320C6727B (maximum 2800 MIPS/ 2100 MFLOPS) made by Texas Instruments, is used for the IF section of the FT DX 3000. The signal is processed with the high speed 300 MHz clock frequency.
• Proven IF WIDTH and IF SHIFT functions provide great QRM rejection performance
IF SHIFT
With the normal bandwidth, the pass band area can be moved relatively, so that harmful signals are rejected from the pass band
IF WIDTH
By adjusting the band width, Interfering signals can be removed from both sides of the pass band, without changing the pass band position. The IF width function can make the pass band narrower with one-touch. This function is effective in a pile-up or contest, when the undesired signals are located just above and below the target signal.
• CONTOUR
The CONTOUR function ideally tailors the received audio signal without changing the bandwidth. The CONTOUR function varies the outline of the IF DSP filter pass band characteristics, and the in-band signal construction can be partially altered. Different from the IF SHIFT or IF WIDTH, the special CONTOUR pass band, can reduce or peak the desired signal, partially and continuously across the pass band. This feature is effective especially when the undesired signal is close to the center frequency.
• Digital Noise Reduction (DNR) by DSP
The installed digital noise reduction circuit provides 15 separate parameters. The noise reduction constants may be set to the optimal working point by varying the 15 step parameters according to the actual noise within the HF band. The desired signal components are peaked and the random noise components are effectively cancelled.
• IF NOTCH
This high Q circuit has steep attenuation characteristics of 70dB or more. Effective removal of a strong beat signal is obtained. The damping characteristics can be switched to wide or narrow band width, and the attenuation level may be adjusted in the Setting Mode Menu. Interfering signals may be attenuated, while minimizing the impact on the received signal.
• CW APF (Audio Peak Filter)
In the CW mode, the APF (Audio Peak Filter) function has an audio peak at the signal frequency; this improves the S/N and increases the readability of the CW signal. The APF peak frequency can be finely aligned.

Selectable Roofing Filers

Roofing filters of 3 kHz, 6 kHz and 15 kHz filters are fitted before the 40.455 MHz 1st IF. These filters reduce the later burden on the receiver mixer and improves the adjacent multi signal characteristics.

Very Low Noise Floor – Terrific Signal to Noise Ratio

The S/N ratio (signal-to-noise ratio) of the local signal that is injected into the 1st IF mixer is one of the most important factors for improving the receiver properties in the ultra-multi-signal environment.

In the FT DX 1200, the combination of it’s high stability and high accuracy 40 MHz TCXO (± 0.5ppm, -10 °C ~ +60 °C), and it’s DDS create the fundamental frequency of this radio, and is locked to the PLL-IC and VCO directly. This circuit construction and method creates the highest quality local signal, with superior S/N performance.

Three IPO Settings – Best Signal Reception During Changing Band Conditions

3-step IPO settings permit the operator to select the most appropriate gain for best signal reception. This variety of selections provides superior receiver performance and the best possible communications with changing band conditions.

The IPO (Intercept Point Optimization) is selected by a control switch located on the front panel. The IPO selection determines the gain of the RF amplifier. The gain setting is very effective in optimizing the receiver performance, depending on the antenna and the communication propagation conditions. The IPO, the ATT and one stage of the RF amplifier are used to optimize the signal levels that are sent to the mixer.

High Quality Audio With Punch

The modulation circuit of the FT DX 1200 utilizes digital variation operational modulation, which creates ideal high quality transmission audio.
• Microphone Amplifier that includes Parametric Equalizer
The modulation circuit of the FT DX 1200 utilizes the digital variation operational modulation type, which creates ideal high quality transmission audio. This radio has a parametric equalizer that makes possible versatile adjustment of the TX audio quality by aligning the TX band audio spectrum. The parametric equalizer can alter the Low, Mid and High part of the audio separately. This three stage parametric equalizer can generate high quality TX audio sound because it can be tuned in detail…without sacrificing the audio dignity.
• IF DSP Speech Processor – DX’er and Contester Proven
The SSB Speech Processor uses IF digital signal processing to increase the intelligibility of the transmitted signal during weak signal crowded conditions. The DSP increases the average power of the important speech spectrum components and reduces the TX power of the less significant components. Adjust the compression level in the Menu Mode to adapt the transmitted SSB signal to best suite your voice characteristics, the situation, propagation conditions and pile-up demands.

Two Antenna Inputs

Two antenna connectors are available on the FT DX 1200 Rear Panel.
• Having multiple antenna selections is an especially effective feature for DX and Contest operating.
• Antenna connection selections memorized and recalled when changing bands.
• It is possible to use Ant 1 for transmit and Ant 2 for receive.

For the CW Enthusiast

CW Zero-in Display
The TX CW side tone pitch frequency can be adjusted in the MENU. The setting range is 300 Hz to 1050 Hz. This tone pitch is used as the reference in transmission. This means that the point, at which the TX pitch is equal to the RX pitch, becomes the zero-in point.

In addition, the FT DX 1200 has a CW tuning display feature. By using this function, as the pitch of the sound that is heard when receiving the CW signal becomes closer to the programmed pitch, the lighted mark moves closer to the center of the display. When the center mark light turns RED, the signal is at the zero-in point.

CW APF (Audio Peak Filter)
In the CW mode, the included APF (Audio Peak Filter) function has an audio peak at the signal frequency; this improves the S/N and increases the readability of the CW signal. The APF peak frequency can be finely aligned. APF bands can be selected from three steps according to preference, whereas peak frequencies can be fine-tuned with the APF switch located on the front panel.

Other CW Features
• Dial step setting (for the CW mode only)
• CW SPOT Feature
• CW Full Break-in
• CW “VOX” Delay is adjustable
• CW Mode reversal (USB or LSB)
• CW Keying available during SSB operation
• Separate KEY Jacks on the front and rear panels
• Electronic Keyer Included
• Four-channel Message Memory (50 characters each); five memories available with FH-2 Keypad (optional)
• Automatic “Beacon” keyer mode

Optional Fully-Automatic µ-Tuning Kit

The u-Tuning Kit that was developed for the FT DX 9000, is optionally available for use with the FT DX 1200. No other Amateur Radio transceiver manufacturer offers a comparable device that may improve your DXing performance in some challenging operating situations.

A large diameter with an adjustable ferrite magnetic material (Ni-Zn ferrite) core, is combined, with a high resolution and high torque stepping motor to automatically find the resonance point. By inserting these tuning units prior to the RF front end of the receiver, the IP3 points are improved by around 4 dB. Three individual tuning units are available covering frequencies from 1.8 MHz through 14 MHz. Many FT 950, FT 2000/D, FT DX 3000, FT DX 5000 and FT DX 9000 Yaesu customers have used them and found them especially effective for use on the Lower Bands.FTDX3000

Paul Leicester | MØFOX | Chesterfield UK | IO93HE | Icom IC-7300

Icom IC-7800 HF/50MHz All Mode Transceiver

7800HF/50MHz All Mode Transceiver

Icom has been developing radio communication equipment for over forty years. Its heritage has always been based on technical excellence from the first analogue PLL circuit in the IC-200, to the ground-breaking 32-bit floating point DSP of the IC-756PRO. Ham radio stations increasingly use high power and high gain antennas that raise the field strength of unintended signals, and thus require a wider receiver dynamic range. Icom has developed the flagship model IC-7800 which is a fusion of forty years analogue RF circuit development expertise, with cutting edge digital technology. The result is 110dB dynamic range, +40dB 3rd order intercept point in HF bands and other phenomenal performance features. The receivers combine various current and new technology, to obtain the +40dBm IP3.

+40dBm IP3 (3rd order Intercept Point)
Icom’s 40 years of analogue RF circuit experience combined with cutting edge digital technology results in an astonishing 110dB receiver dynamic range and a +40dBm IP3 in the HF bands. A first in Ham radio!

To achieve this superior receiver performance, Icom’s engineering team completely reviewed the whole analogue circuit and matched it to the DSP units. This allowed us to explore new technical dimensions such as a double conversion super-heterodyne system, mechanical relay BPF switching and two roofing filters.

Mechanical relay BPF (Band Pass filter) switching and two roofing filters
The IC-7800 uses highly reliable and durable mechanical relays for BPF switching instead of non-linear semi-conductors which cause distortion. The mechanical relay prevents 2nd order distortion at the primary stage of signal processing.

The IC-7800 has two roofing filters before the 1st IF amplifier stage. One is 15 kHz filter for FM mode and the other is 6kHz filter for SSB, CW, AM and data modes. The IC-7800 switches between these two roofing filters depending on operating mode. Typically, transceivers use only one broad 15 kHz roofing filter for all modes. This is not an optimal design for SSB, CW, or AM modes.

The two roofing filters dramatically improve the blocking characteristics from strong adjacent signals.

Automatic tracking pre-selector
The pre-selector works from 1.5MHz to 30MHz. The pre-selector automatically tracks the intended signal, keeping the pre-selector’s bandwidth centred on the operating frequency at several kHz steps (minimum). The pre-selector rejects unwanted out of band interference from multi-multi operation or strong broadcast stations, as your first line of defence against interfering signals. The centre frequency of the pre-selector is adjustable from the DIGI-SEL tuning knob on the front panel.

Double conversion super-heterodyne system
While mixers often become a cause of signal distortion and spurious emissions, the IC-7800 utilises a double conversion super-heterodyne system using a newly developed image rejection mixer. A high performance D-MOS FET array for the 1st mixer stage is infused with a signal from the high-level C/N, high-drive Local Oscillator from the PLL unit. This new mixer reduces signal distortion through IF processing and provides a high-fidelity signal to the DSP unit.

AGC loop management using the DSP unit
The IC-7800 has two types of AGC loops. One of the AGC loops detects the AGC voltage at the BPF input in the DSP unit and feeds back to the 1st IF amplifier. This AGC loop prevents the saturation of the 1st IF amplifier from strong signals out of the BPF bandwidth, and improves the dynamic range against adjacent signals. The other AGC loop detects the AGC voltage at the digital IF filter output which has only passed the intended signal and draws the full potential from the digital IF filter. Combining the digital IF filter, manual notch, and the 1st IF stage, these are all controlled by the DSP unit. 110dB of ultra wide dynamic range in the receiver means the IF amplifier is distortion free from strong signals.

Two completely independent receiver circuits
The ultimate dual receiver performance is at your control; the receivers are completely independent all the way from the 4 antenna jacks, through the pre-selectors, DSP, signal detectors, front panel control, and right into the stereo headphone! The dual receiver allows you to receive two different bands simultaneously in different modes, with each receiver not causing any adverse affect to the other one. This true dual receiver takes your band hopping and contesting experience to the next level!

AGC Volume knob for fine tuning
In addition to the preset AGC time constants (slow, medium and fast), the manual AGC volume provides flexible detailed AGC tuning.

Digital IF filter
The digital IF filter has superior filtering performance and a distinguished shaping factor that demonstrates the power of 32-bit floating point DSP. The digital filter is completely free from deterioration due to deviations in band characteristics, temperature change, or mechanical vibration, all of which have likely been seen with analogue filters. The digital IF filter also provides excellent ripple characteristics and clean cut that have never been available with analogue filters. The filter shape is selectable from soft and sharp, depending on the purpose, operating band, band conditions, etc. It is also possible to set CW and SSB filter characteristics independently, and also select the filter shape while actually receiving a signal.

Manual notch filter with adjustable notch filter characteristics
The IC-7800’s manual notch filter shape can be set in 3-steps for the various receiving conditions. The manual notch filter has extremely sharp characteristics for processing in the DSP and provides tremendous performance for attenuation levels of more than 70dB in all shapes. The DSP-based manual notch provides stable performance and completely shuts off undesired beat signals without affecting AGC gain. In addition, an automatic notch filter tracks and wipes off the beat signal and RTTY interference.

Four 32-bit floating point DSP units and 24-bit AD/DA converters
The IC-7800 uses four pairs of 32-bit floating point DSP units and 24-bit AD/DA converters. One for the transmitter, one for each receiver, and the final one for the spectrum scope. The DSP units deliver the phenomenal performance of the digital signal processing. A powerful combination born of Icom’s analogue RF technology and experience.

200W output power at full duty cycle
The newly designed push-pull power MOS-FET amplifiers work with 48V DC and provide a powerful 200W of output power at full duty cycle with low IMD in all bands. The digital PSN modulator using a dedicated DSP unit consistently reproduces an outstanding signal-to-noise ratio, providing clean and clear transmission.

Ultra high stability OCXO unit
Your IC-7800 will be the reference point on the band with a standard stability of +/-0.05ppm! Even on the 6m band, that is less than 3Hz error from the Oven Controlled Crystal Oscillator! Also, a 10MHz reference frequency can be the input/output for external equipment.

RTTY /PSK31 operation without PC connection
The IC-7800 has a modulator and demodulator for the 2 major HF ham digital modes. Encode and decode of PSK31 and Baudot RTTY signals are possible by simply connecting a USB keyboard to the IC-7800. The twin peak audio filter improves RTTY reception. In addition, transmitted and received messages can be stored to the CF memory card and transferred to your PC.

Real time spectrum scope
With the dedicated DSP unit, the spectrum scope provides 80dB dynamic range of signal processing (the IC-756PROII is 60dB). The scope span can be set to +/-2.5 to +/-250kHz in 7 steps, providing wide band signal analysis. The monitor range can be set independently from the receiving frequency. You can monitor the band condition between the selected sweep edges, as well as sweep a selected band width centred on the receiving frequency in the scope screen.

In addition, the scope has many features including scope attenuator (10dB/20dB/30dB), 3 types of marker (Main band, Sub band, Transmit), Max hold function and Main- Sub band one touch switch. The mini scope function is convenient for continuous monitoring even while adjusting the set mode.

Microphone equaliser and adjustable transmit bandwidth
The built-in audio equaliser has the separate bass and treble adjustment for a total of 121 combinations, so you can tone your voice up or down as you want. In addition, the transmit bandwidth is selectable.

Icom IC-7800 HF/50MHz All Mode Transceiver

Paul Leicester | MØFOX | Chesterfield UK | IO93HE | Icom IC-7300

Icom IC7200 HF/50mhz Transceiver

IC7200

Icom IC7200 HF/50mhz Transceiver

The IC-7200 HF/50MHz transceiver maintains all the traditions of high quality engineering that you expect from Icom. Rugged in design and easy to operate, the IC-7200 utilises the latest digital functions including digital IF filter, twin PBT and manual notch filter which are normally associated with more expensive models. The IC-7200 is ideal for field operation or at home in your shack and is designed to be one of the most practical rigs available.

IF DSP
The IC-7200 utlises the latest IF DSP technology including digital IF filter, digital twin PBT and manual notch filter.

AGC loop management
Distortion and blocking from strong nearby signals are prevented by placing DSP functions inside the AGC loop. The AGC time constants are selectable from fast, slow and off for each operating mode.

Digital IF filter
The built-in digital filter allows you to flexibly select the filter width and shape from soft and sharp* and provides cutting edge filter characteristics. The twin peak filter for RTTY mode improves the frequency response and provides better readability in RTTY mode. * Filter shape is selectable for SSB and CW modes only.

Digital Twin PBT
Tailor your IF passband with the Twin PBT by electronically shifting the upper and lower edges of the IF filter. Depending on the use of the concentric knobs, you can either narrow the IF passband, or shift the entire passband to eliminate interfering signals.

Manual notch filter
The manual notch filter delivers more than 70dB of attenuation. Strong interfering tones will be eliminated without adversely affecting the AGC loop performance. On the bottom right of the front panel, a dedicated control knob adjusts the notch filter frequency.

Digital noise reduction
The digital noise reduction reduces background noise and improves the signal-to-noise ratio. The noise reduction level is adjustable in 16 steps which improves the readability of voice and data signals.

Digital noise blanker
The noise blanker reduces pulse-type noise such as engine ignition and sparking. The NB level and width (blanking duration) are adjustable in 101 steps.

High frequency stability
The IC-7200 has the built-in high stability crystal unit. It provides a very high frequency stability of ±0.5 ppm suitable for RTTY operation.

USB port for PC control The IC-7200 can be controlled by a PC through a USB port using the CI-V data format. In addition, modulator and received audio can also be transferred over the USB cable. By using appropriate external software, you can record incoming calls and/or transmit preprogrammed messages from your PC.

RF speech compressor
The digital RF speech compressor increases your average talk power in SSB mode. Even when the compression level is increased, the DSP controlled RF speech compressor provides low distortion audio.

CW mode operation
Full break-in, selectable CW carrier point (USB or LSB) and adjustable CW pitch are standard.

High stability transmitter
The DDS (Direct Digital Synthesizer) improves the C/N ratio and creates a noiseless, clean transmit signal.

100W output power
Using proven RD100HHF1 MOS FETs in a push-pull PA circuit and with a dual-fan cooling system, the IC-7200 provides a stable 100W output even during high duty cycle operation.

Tough construction against water intrusion
The buttons and knobs on the front panel have water resistant protection, providing a measure of protection against water intrusion. * IC-7200 is NOT waterproof.

Rugged design for outdoor use The IC-7200 has a rugged build, which means that the enjoyment of this rig is not limited to your shack.

Front mounted loud speaker
The front-mounted speaker provides clear audio sounds that can be clearly heard without impediment during operation.
IC-7200 Additional Features
RIT
VOX
LCD backlight (Hi/Lo/Off)
201 memory channels
Built-in 20dB attenuator
Preamplifier
Dial lock
Auto TS function
1Hz step tuning
Band stacking register
Built-in voice synthesizer
Auto notch filter
Power/SWR/ALC meter

Paul Leicester | MØFOX | Chesterfield UK | IO93HE | Icom IC-7300