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Miniwhip Active Antenna HF LF VlF Mini Whip Shortwave SDR RX Portable Recei M ZH Description: MINIWHIP VLF LF HF ACTIVE ANTENNA.This is known PA0NHC newest design of MiniWhip Antenna. I have redesigned and built it on SMD components but the circuit diagram itself stayed the same as it had been described on his web page in open source. This sale includes the MiniWhip and Power Splitter assembled and tested boards. They go with its circuit diagrams and part list specification. No cables or connectors are included. This new version of PA0NHC MiniWhip Antenna has these features.New version, using modern BF998 and BCX54 semi conductors.Real class A circuitry, clean reception without IMD.One coax connection.Broadband R/C coupling to the receiver, no transformer For best signal-to-noise ratio:install the Miniwhip onto a well grounded mast.connect "GND" of the Miniwhip PCB to that mast.place HI-Ui ferrite cores (Ui bwtween 5000 and 10.000) on the beginning and end of all cables to block cable noise currents. Specifications: Frequency range: 10 KHz - 30 MHz Power: 12 - 15 volts at 150 mA Second order output intercept point: Greater than + 70 dBm Third order output intercept point: Greater than + 30 dBm Maximum output power: in excess of - 15 dBm PCB Size: Length (mm): As the picture show Connector: BNC Feed line: 50 - 100 ohm coaxial cable up to 100 meter long T o note please: Each antenna performs as good as its installation permits it to. Any active antenna is not working good inside the house! It should be mounted OUTSIDE and as high as possible. Place this MiniWhip antenna PCB inside suitable enclosure of your choise and mount outside the house. Probably for the enclosure you can use a piece of the PVC tube which available in varios diameters in a local store. Do not use metal enclosure! It wont work there! For max. sensitivity: this antenna should be positioned as high and free from meta Package include: 1Set Board Note:   The color might be a little different from the actual product due to color display of different monitors.  Please allow 1-3 cm error. Le 16-nov.-19 à 10:16:12 Paris, le vendeur a ajouté les informations suivantes:

  Description: MINIWHIP VLF LF HF ACTIVE ANTENNA.This is known PA0NHC newest design of MiniWhip Antenna. I have redesigned and built it on SMD components but the circuit diagram itself stayed the same as it had been described on his web page in open source. This sale includes the MiniWhip and Power Splitter assembled and tested boards. They go with its circuit diagrams and part list specification. No cables or connectors are included. This new version of PA0NHC MiniWhip Antenna has these features.New version, using modern BF998 and BCX54 semi conductors.Real class A circuitry, clean reception without IMD.One coax connection.Broadband R/C coupling to the receiver, no transformer For best signal-to-noise ratio:install the Miniwhip onto a well grounded mast.connect "GND" of the Miniwhip PCB to that mast.place HI-Ui ferrite cores (Ui bwtween 5000 and 10.000) on the beginning and end of all cables to block cable noise currents. Specifications: Frequency range: 10 KHz - 30 MHz Power: 12 - 15 volts at 150 mA Second order output intercept point: Greater than + 70 dBm Third order output intercept point: Greater than + 30 dBm Maximum output power: in excess of - 15 dBm PCB Size: Length (mm): As the picture show Connector: BNC Feed line: 50 - 100 ohm coaxial cable up to 100 meter long T o note please: Each antenna performs as good as its installation permits it to. Any active antenna is not working good inside the house! It should be mounted OUTSIDE and as high as possible. Place this MiniWhip antenna PCB inside suitable enclosure of your choise and mount outside the house. Probably for the enclosure you can use a piece of the PVC tube which available in varios diameters in a local store. Do not use metal enclosure! It wont work there! For max. sensitivity: this antenna should be positioned as high and free from meta Package include: 1Set Board Note:   The color might be a little different from the actual product due to color display of different monitors.  Please allow 1-3 cm error.     Le 16-oct.-19 à 20:29:37 Paris, le vendeur a ajouté les informations suivantes:

Description: MINIWHIP VLF LF HF ACTIVE ANTENNA.This is known PA0NHC newest design of MiniWhip Antenna. I have redesigned and built it on SMD components but the circuit diagram itself stayed the same as it had been described on his web page in open source. This sale includes the MiniWhip and Power Splitter assembled and tested boards. They go with its circuit diagrams and part list specification. No cables or connectors are included. This new version of PA0NHC MiniWhip Antenna has these features.New version, using modern BF998 and BCX54 semi conductors.Real class A circuitry, clean reception without IMD.One coax connection.Broadband R/C coupling to the receiver, no transformer For best signal-to-noise ratio:install the Miniwhip onto a well grounded mast.connect "GND" of the Miniwhip PCB to that mast.place HI-Ui ferrite cores (Ui bwtween 5000 and 10.000) on the beginning and end of all cables to block cable noise currents. Specifications: Frequency range: 10 KHz - 30 MHz Power: 12 - 15 volts at 150 mA Second order output intercept point: Greater than + 70 dBm Third order output intercept point: Greater than + 30 dBm Maximum output power: in excess of - 15 dBm PCB Size: Length (mm): As the picture show Connector: BNC Feed line: 50 - 100 ohm coaxial cable up to 100 meter long T o note please: Each antenna performs as good as its installation permits it to. Any active antenna is not working good inside the house! It should be mounted OUTSIDE and as high as possible. Place this MiniWhip antenna PCB inside suitable enclosure of your choise and mount outside the house. Probably for the enclosure you can use a piece of the PVC tube which available in varios diameters in a local store. Do not use metal enclosure! It wont work there! For max. sensitivity: this antenna should be positioned as high and free from meta Package include: 1Set Board Note:   The color might be a little different from the actual product due to color display of different monitors.  Please allow 1-3 cm error. Le 02-nov.-19 à 04:55:03 Paris, le vendeur a ajouté les informations suivantes:

Description: MINIWHIP VLF LF HF ACTIVE ANTENNA.This is known PA0NHC newest design of MiniWhip Antenna. I have redesigned and built it on SMD components but the circuit diagram itself stayed the same as it had been described on his web page in open source. This sale includes the MiniWhip and Power Splitter assembled and tested boards. They go with its circuit diagrams and part list specification. No cables or connectors are included. This new version of PA0NHC MiniWhip Antenna has these features.New version, using modern BF998 and BCX54 semi conductors.Real class A circuitry, clean reception without IMD.One coax connection.Broadband R/C coupling to the receiver, no transformer For best signal-to-noise ratio:install the Miniwhip onto a well grounded mast.connect "GND" of the Miniwhip PCB to that mast.place HI-Ui ferrite cores (Ui bwtween 5000 and 10.000) on the beginning and end of all cables to block cable noise currents. Specifications: Frequency range: 10 KHz - 30 MHz Power: 12 - 15 volts at 150 mA Second order output intercept point: Greater than + 70 dBm Third order output intercept point: Greater than + 30 dBm Maximum output power: in excess of - 15 dBm PCB Size: Length (mm): As the picture show Connector: BNC Feed line: 50 - 100 ohm coaxial cable up to 100 meter long T o note please: Each antenna performs as good as its installation permits it to. Any active antenna is not working good inside the house! It should be mounted OUTSIDE and as high as possible. Place this MiniWhip antenna PCB inside suitable enclosure of your choise and mount outside the house. Probably for the enclosure you can use a piece of the PVC tube which available in varios diameters in a local store. Do not use metal enclosure! It wont work there! For max. sensitivity: this antenna should be positioned as high and free from meta Package include: 1Set Board Note:   The color might be a little different from the actual product due to color display of different monitors.  Please allow 1-3 cm error. Le 18-nov.-19 à 18:30:46 Paris, le vendeur a ajouté les informations suivantes:

Description: MINIWHIP VLF LF HF ACTIVE ANTENNA.This is known PA0NHC newest design of MiniWhip Antenna. I have redesigned and built it on SMD components but the circuit diagram itself stayed the same as it had been described on his web page in open source. This sale includes the MiniWhip and Power Splitter assembled and tested boards. They go with its circuit diagrams and part list specification. No cables or connectors are included. This new version of PA0NHC MiniWhip Antenna has these features.New version, using modern BF998 and BCX54 semi conductors.Real class A circuitry, clean reception without IMD.One coax connection.Broadband R/C coupling to the receiver, no transformer For best signal-to-noise ratio:install the Miniwhip onto a well grounded mast.connect "GND" of the Miniwhip PCB to that mast.place HI-Ui ferrite cores (Ui bwtween 5000 and 10.000) on the beginning and end of all cables to block cable noise currents. Specifications: Frequency range: 10 KHz - 30 MHz Power: 12 - 15 volts at 150 mA Second order output intercept point: Greater than + 70 dBm Third order output intercept point: Greater than + 30 dBm Maximum output power: in excess of - 15 dBm PCB Size: Length (mm): As the picture show Connector: BNC Feed line: 50 - 100 ohm coaxial cable up to 100 meter long T o note please: Each antenna performs as good as its installation permits it to. Any active antenna is not working good inside the house! It should be mounted OUTSIDE and as high as possible. Place this MiniWhip antenna PCB inside suitable enclosure of your choise and mount outside the house. Probably for the enclosure you can use a piece of the PVC tube which available in varios diameters in a local store. Do not use metal enclosure! It wont work there! For max. sensitivity: this antenna should be positioned as high and free from meta Package include: 1Set Board Note:   The color might be a little different from the actual product due to color display of different monitors.  Please allow 1-3 cm error. Le 17-nov.-19 à 11:15:12 Paris, le vendeur a ajouté les informations suivantes:

Description: MINIWHIP VLF LF HF ACTIVE ANTENNA.This is known PA0NHC newest design of MiniWhip Antenna. I have redesigned and built it on SMD components but the circuit diagram itself stayed the same as it had been described on his web page in open source. This sale includes the MiniWhip and Power Splitter assembled and tested boards. They go with its circuit diagrams and part list specification. No cables or connectors are included. This new version of PA0NHC MiniWhip Antenna has these features.New version, using modern BF998 and BCX54 semi conductors.Real class A circuitry, clean reception without IMD.One coax connection.Broadband R/C coupling to the receiver, no transformer For best signal-to-noise ratio:install the Miniwhip onto a well grounded mast.connect "GND" of the Miniwhip PCB to that mast.place HI-Ui ferrite cores (Ui bwtween 5000 and 10.000) on the beginning and end of all cables to block cable noise currents. Specifications: Frequency range: 10 KHz - 30 MHz Power: 12 - 15 volts at 150 mA Second order output intercept point: Greater than + 70 dBm Third order output intercept point: Greater than + 30 dBm Maximum output power: in excess of - 15 dBm PCB Size: Length (mm): As the picture show Connector: BNC Feed line: 50 - 100 ohm coaxial cable up to 100 meter long T o note please: Each antenna performs as good as its installation permits it to. Any active antenna is not working good inside the house! It should be mounted OUTSIDE and as high as possible. Place this MiniWhip antenna PCB inside suitable enclosure of your choise and mount outside the house. Probably for the enclosure you can use a piece of the PVC tube which available in varios diameters in a local store. Do not use metal enclosure! It wont work there! For max. sensitivity: this antenna should be positioned as high and free from meta Package include: 1Set Board Note:   The color might be a little different from the actual product due to color display of different monitors.  Please allow 1-3 cm error. Le 21-nov.-19 à 15:16:08 Paris, le vendeur a ajouté les informations suivantes:

Description: MINIWHIP VLF LF HF ACTIVE ANTENNA.This is known PA0NHC newest design of MiniWhip Antenna. I have redesigned and built it on SMD components but the circuit diagram itself stayed the same as it had been described on his web page in open source. This sale includes the MiniWhip and Power Splitter assembled and tested boards. They go with its circuit diagrams and part list specification. No cables or connectors are included. This new version of PA0NHC MiniWhip Antenna has these features.New version, using modern BF998 and BCX54 semi conductors.Real class A circuitry, clean reception without IMD.One coax connection.Broadband R/C coupling to the receiver, no transformer For best signal-to-noise ratio:install the Miniwhip onto a well grounded mast.connect "GND" of the Miniwhip PCB to that mast.place HI-Ui ferrite cores (Ui bwtween 5000 and 10.000) on the beginning and end of all cables to block cable noise currents. Specifications: Frequency range: 10 KHz - 30 MHz Power: 12 - 15 volts at 150 mA Second order output intercept point: Greater than + 70 dBm Third order output intercept point: Greater than + 30 dBm Maximum output power: in excess of - 15 dBm PCB Size: Length (mm): As the picture show Connector: BNC Feed line: 50 - 100 ohm coaxial cable up to 100 meter long T o note please: Each antenna performs as good as its installation permits it to. Any active antenna is not working good inside the house! It should be mounted OUTSIDE and as high as possible. Place this MiniWhip antenna PCB inside suitable enclosure of your choise and mount outside the house. Probably for the enclosure you can use a piece of the PVC tube which available in varios diameters in a local store. Do not use metal enclosure! It wont work there! For max. sensitivity: this antenna should be positioned as high and free from meta Package include: 1Set Board Note:   The color might be a little different from the actual product due to color display of different monitors.  Please allow 1-3 cm error. Le 19-déc.-19 à 03:27:15 Paris, le vendeur a ajouté les informations suivantes:

Description: MINIWHIP VLF LF HF ACTIVE ANTENNA.This is known PA0NHC newest design of MiniWhip Antenna. I have redesigned and built it on SMD components but the circuit diagram itself stayed the same as it had been described on his web page in open source. This sale includes the MiniWhip and Power Splitter assembled and tested boards. They go with its circuit diagrams and part list specification. No cables or connectors are included. This new version of PA0NHC MiniWhip Antenna has these features.New version, using modern BF998 and BCX54 semi conductors.Real class A circuitry, clean reception without IMD.One coax connection.Broadband R/C coupling to the receiver, no transformer For best signal-to-noise ratio:install the Miniwhip onto a well grounded mast.connect "GND" of the Miniwhip PCB to that mast.place HI-Ui ferrite cores (Ui bwtween 5000 and 10.000) on the beginning and end of all cables to block cable noise currents. Specifications: Frequency range: 10 KHz - 30 MHz Power: 12 - 15 volts at 150 mA Second order output intercept point: Greater than + 70 dBm Third order output intercept point: Greater than + 30 dBm Maximum output power: in excess of - 15 dBm PCB Size: Length (mm): As the picture show Connector: BNC Feed line: 50 - 100 ohm coaxial cable up to 100 meter long T o note please: Each antenna performs as good as its installation permits it to. Any active antenna is not working good inside the house! It should be mounted OUTSIDE and as high as possible. Place this MiniWhip antenna PCB inside suitable enclosure of your choise and mount outside the house. Probably for the enclosure you can use a piece of the PVC tube which available in varios diameters in a local store. Do not use metal enclosure! It wont work there! For max. sensitivity: this antenna should be positioned as high and free from meta Package include: 1Set Board Note:   The color might be a little different from the actual product due to color display of different monitors.  Please allow 1-3 cm error. Le 11-mars-20 à 13:30:27 Paris, le vendeur a ajouté les informations suivantes:

Description: MINIWHIP VLF LF HF ACTIVE ANTENNA.This is known PA0NHC newest design of MiniWhip Antenna. I have redesigned and built it on SMD components but the circuit diagram itself stayed the same as it had been described on his web page in open source. This sale includes the MiniWhip and Power Splitter assembled and tested boards. They go with its circuit diagrams and part list specification. No cables or connectors are included. This new version of PA0NHC MiniWhip Antenna has these features.New version, using modern BF998 and BCX54 semi conductors.Real class A circuitry, clean reception without IMD.One coax connection.Broadband R/C coupling to the receiver, no transformer For best signal-to-noise ratio:install the Miniwhip onto a well grounded mast.connect "GND" of the Miniwhip PCB to that mast.place HI-Ui ferrite cores (Ui bwtween 5000 and 10.000) on the beginning and end of all cables to block cable noise currents. Specifications: Frequency range: 10 KHz - 30 MHz Power: 12 - 15 volts at 150 mA Second order output intercept point: Greater than + 70 dBm Third order output intercept point: Greater than + 30 dBm Maximum output power: in excess of - 15 dBm PCB Size: Length (mm): As the picture show Connector: BNC Feed line: 50 - 100 ohm coaxial cable up to 100 meter long T o note please: Each antenna performs as good as its installation permits it to. Any active antenna is not working good inside the house! It should be mounted OUTSIDE and as high as possible. Place this MiniWhip antenna PCB inside suitable enclosure of your choise and mount outside the house. Probably for the enclosure you can use a piece of the PVC tube which available in varios diameters in a local store. Do not use metal enclosure! It wont work there! For max. sensitivity: this antenna should be positioned as high and free from meta Package include: 1Set Board Note:   The color might be a little different from the actual product due to color display of different monitors.  Please allow 1-3 cm error. Le 04-avr.-20 à 15:50:26 Paris, le vendeur a ajouté les informations suivantes:

A vendre est une Japan Radio Corporation NRD 535. Le récepteur est en excellent état et fonctionne parfaitement. Il y a quelques rayures sur le meuble qui se trouvent dans les photos. Le panneau avant montre peu ou pas d'usure. Le cordon d'alimentation sera inclus. La radio sera soigneusement emballée pour l'expédition. Voici un complément d'information du JRC trouvé sur le Web. La Japan Radio Company NRD-535 offre une couverture générale de couverture de 90 à 30000 kHz en mode AM, USB, LSB, CW, RTTY, FAX et FM étroits. Un circuit superheterodyne à triple conversion est utilisé pour offrir une superbe sensibilité et un rejet d'image. Japan Radio a conçu un synthétiseur PLL spécialisé à haute vitesse à 1 Hz pour vous fournir une résolution d'accord de 1 Hz jamais disponible. La résolution de l'écran est de 10 Hz grâce à un affichage magnifique. Une mémoire de balayage non volatile sophistiquée de 200 canaux stocke la fréquence, le mode, la sélection du filtre AGC, ATT et IF. Les canaux peuvent être scannés à un taux défini par l'utilisateur (0,5 à 5 secondes / canal). La réception de balayage peut être réglée de 0,05 à 0,5 secondes / étape. La réputation de Japan Radio pour une stabilité extrême continue avec seulement une dérive de ± 2 PPM (après 1 heure) rendant le NRD-535 le choix inévitable pour les modes exigeants non vocaux tels que le code Morse, RTTY et FAX. Quatre positions de filtre indépendantes sont disponibles. La position WIDE comporte un filtre de 4 kHz (@ -6dB). La position INTERIEURE comporte un filtre de 2 kHz (@ -6dB). Les positions NARRow et AUXiliary ne sont pas remplies. (Une position AUX vide entraîne une bande passante de +12 kHz). Les positions AUXiliary peuvent être utilisées pour monter des filtres optionnels. Tout filtre peut être utilisé avec n'importe quel mode (sauf FM). C'est une fonctionnalité exceptionnelle qui offre une flexibilité pour les auditeurs. Le clavier comporte l'entrée à la fois MHz et kHz. L'entretoise de bruit à double largeur peut être utilisée pour réduire ou éliminer le bruit d'impulsion (comme l'auto-inflammation ou le "pic"). Les autres commandes du panneau avant comprennent: SQUELCH, AF et RF GAIN et TONE. Un bouton AGC permet de sélectionner AGC FAST, SLOW ou OFF. Le bouton DIMMER offre quatre niveaux d'affichage de luminosité. Une horloge intégrée 24 heures sur 24 est fournie. Le TIMER permet l'écoute / l'enregistrement sans surveillance. Le récepteur peut être programmé pour être activé à un moment donné (sur une fréquence, mode, bande passante, etc.) puis éteindre à un moment programmé. Une connexion terminale temporisée est fournie sur le panneau arrière de l'ensemble pour activer un magnétophone. Le NRD-535 contient une interface informatique RS-232 intégrée. Il existe des entrées d'antenne pour fils ou câbles alimentés. La tension d'entrée CA est sélectionnable par l'utilisateur. For sale is a Japan Radio Corporation NRD 535. The receiver is in excellent condition and works perfectly. There are a few scratches on the cabinet which can be seen in the photos. The front panel shows little to no wear. The power cord will be included. The radio will be carefully packed for shipping. Here is more information from JRC found on the web. The Japan Radio Company NRD-535 affords general coverage reception from 90 to 30000 kHz in AM, USB, LSB, CW, RTTY, FAX and narrow FM modes. A triple conversion superheterodyne circuit is employed to provide superb sensitivity and image rejection. Japan Radio has designed a special high-speed 1 Hz step PLL synthesizer to provide you with 1 Hz tuning resolution never before available. Display resolution is 10 Hz via a gorgeous display. A sophisticated 200 channel non-volatile scanning memory stores frequency, mode, AGC, ATT and IF filter selection. Channels can be scanned at a user-defined rate (.5 to 5 seconds/channel). Sweep reception can be adjusted from.05 to.5 seconds/step. Japan Radio's reputation for extreme stability continues with only ± 2 PPM drift (after 1 hour) making the NRD-535 the inevitable choice for the demanding non-voice modes such as Morse code, RTTY and FAX. Four independent filter positions are available. The WIDE position features a 4 kHz (@ -6dB) filter. The INTERmediate position features a 2 kHz (@ -6dB) filter. The NARRow and AUXiliary positions are not filled. (An empty AUX position results in a +12 kHz bandwidth). The AUXiliary positions can be used to mount optional filters. Any filter may be used with any mode (except FM). This is an exceptional feature that provides listener flexibility. The keypad features both MHz and kHz input. The dual-width noise blanker can be used to reduce or eliminate pulse noise (like auto ignition or the "woodpecker"). Other front panel controls include: SQUELCH, AF and RF GAIN and TONE. An AGC button permits the selection of AGC FAST, SLOW or OFF. The DIMMER button offers four brightness display levels. A built-in 24 hour clock timer is provided. The TIMER permits unattended listening/recording. The receiver can be programmed to be turned on at a particular time (on a set frequency, mode, bandwidth, etc.) and then turn off at a programmed time. A timer-out terminal connection is provided on the back panel of the set to activate a tape recorder. The NRD-535 contains a built-in RS-232 computer interface. There are antenna inputs for wire or coax fed. The AC input voltage is user selectable.

HF receiver Collins 51S-1 - round emblem Fully tested on all bands; Good working condition This one is well looked for by serious vintage receiver collectors. All tubes have been replaced by N.O.S., U.S. imported tubes set. The S-meter light has been updated to modern plug-in-play solid-state LED lamp replacement, and white Simpson scale. (the original dark-brown S-meter scale is supplied too) No further modifications have been carried out. There are few dents as shown on the photos, but this rig is working good overall, given its age. Frequency coverage: 200kHz to 30 MHz in thirty 1 MHz bands. Dial lock. USB, LSB, AM or CW demodulation. Power supply: 220V 125Watt. 17 tubes. The delivery includes 51S-1 receiver; temporary loudspeaker (attached to the top lid), and 220V mains cord. No documentation, it is largely available free of charge on the web. Delivery includes the 220V cord;It is sold as is, no warranty whatsoever; what you see is what you get. If it does not suit your needs, please send it back, in the same packing card box to give someone else luck.

HF receiver Collins 51S-1 - wing emblem Fully tested on all bands; Good working condition This one is well looked for by serious vintage receiver collectors. All tubes have been replaced by N.O.S., U.S. imported tubes set. The S-meter has white Simpson scale. No further modifications have been carried out. There are few scratches as shown on the photos, but this rig is working good overall, given its age. Frequency coverage: 200kHz to 30 MHz in thirty 1 MHz bands. Dial lock. USB, LSB, AM or CW demodulation. Power supply: 220V 125Watt. 17 tubes. The delivery includes 51S-1 receiver; temporary loudspeaker (attached to the top lid, easily removed and replaced by a larger one for comfortable listening), and 220V mains cord. No documentation, (it is largely available free of charge on the web);  It is sold as is, no warranty whatsoever; what you see is what you get.  If it does not suit your needs, please send it back, in the same packing card box to give someone else luck.

HF receiver Collins 51S-1 - round emblem Fully tested on all bands; Good working condition   This one is well looked for by serious vintage receiver collectors.   All tubes have been replaced by N.O.S., U.S. imported tubes set.  The S-meter light has been updated to modern plug-in-play solid-state LED lamp replacement, and white Simpson scale. (the original dark-brown S-meter scale is supplied too)  No further modifications have been carried out. There are few dents as shown on the photos, but this rig is working good overall, given its age.   Frequency coverage: 200kHz to 30 MHz in thirty 1 MHz bands. Dial lock. USB, LSB, AM or CW demodulation. Power supply: 220V 125Watt. 17 tubes.  The delivery includes 51S-1 receiver; temporary loudspeaker (attached to the top lid), and 220V mains cord. No documentation, it is largely available free of charge on the web.  Delivery includes the 220V cord;It is sold as is, no warranty whatsoever; what you see is what you get.

HF receiver Collins 51S-1 - round emblem Fully tested on all bands; Good working condition   This one is well looked for by serious vintage receiver collectors.   All tubes have been replaced by N.O.S., U.S. imported tubes set.  The S-meter light has been upgraded to modern plug-in-play solid-state LED lamp replacement, and white Simpson scale. (the original dark-brown S-meter scale is supplied too)  No further modifications have been carried out. There are few dents as shown on the photos, but this rig is working good overall, given its age.   Frequency coverage: 200kHz to 30 MHz in thirty 1 MHz bands. Dial lock. USB, LSB, AM or CW demodulation. Power supply: 220V 125Watt. 17 tubes.  The delivery includes 51S-1 receiver; temporary loudspeaker (attached to the top lid), and 220V mains cord. No documentation, it is largely available free of charge on the web.  It is sold as is, no warranty whatsoever; what you see is what you get.

HF receiver Collins 51S-1 - wing emblem Fully tested on all bands; Good working condition This one is well looked for by serious vintage receiver collectors. All tubes have been replaced by N.O.S., U.S. imported tubes set. The S-meter has white Simpson scale. No further modifications have been carried out. There are few scratches as shown on the photos, but this rig is working good overall, given its age. Frequency coverage: 200kHz to 30 MHz in thirty 1 MHz bands. Dial lock. USB, LSB, AM or CW demodulation. Power supply: 220V 125Watt. 17 tubes. The delivery includes 51S-1 receiver; temporary loudspeaker (attached to the top lid, easily removed and replaced by a larger one for comfortable listening), and 220V mains cord. No documentation, (it is largely available free of charge on the web);  It is sold as is, no warranty whatsoever; what you see is what you get.