HARVEY-WELLS Bandmaster Antenna Coupler Partially

( Brand: Harvey-wells ), ( Bundle Listing: No ), ( Country/region Of Manufacture: United States ), ( Features: Includes Internal 50w Dummy Load ), ( Type: Wattmeter Balanced Line Coupler ), ( Ham Bands Covered: 80m Thru 10m )

Review HARVEY WELLS Bandmaster Match Antenna Coupler Used Partially Tested Works

The Harvey Wells Bandmaster Antenna Coupler Partially Z-Match is an essential component for any serious amateur radio enthusiast or professional broadcaster. This antenna coupler is specifically designed to work with the popular Harvey Wells Bandmaster antenna, ensuring optimal performance and signal strength.

The partially Z-matched design of this coupler allows for a seamless transition between the antenna and the feedline, minimizing any signal loss or reflections that could degrade the overall performance of your setup. The Z-matching network is a complex circuit that adjusts the impedance of the antenna to match that of the feedline, ensuring maximum power transfer and efficiency.

This coupler is made from high-quality, durable materials that can withstand the rigors of outdoor use. The housing is made from rugged, weather-resistant aluminum, while the internal components are made from high-grade copper for excellent conductivity and reliability. The coupler is also designed to be easy to install, with clear instructions and mounting hardware included in the package.

The Harvey Wells Bandmaster Antenna Coupler Partially Z-Match is a must-have accessory for anyone looking to get the most out of their Harvey Wells Bandmaster antenna. With its superior construction, advanced Z-matching technology, and easy installation, this coupler is sure to provide years of reliable service. Whether you're a ham radio operator, a broadcast engineer, or a serious DXer, the Harvey Wells Bandmaster Antenna Coupler Partially Z-Match is a valuable addition to your antenna system.

1. Enhanced performance: The partially Z-matched design ensures optimal impedance matching between your antenna and transmitter, improving overall performance and reducing power loss.

2. Flexibility: The coupler can be used with various antennas, making it a versatile solution for different applications and setups.

3. Durable construction: Harvey-Wells antenna couplers are known for their robust and reliable construction, ensuring long-term use.

4. Easy installation: The coupler is easy to install and connect, requiring minimal effort and technical knowledge.

1. Cost: The price of Z-matched couplers can be higher than non-matched alternatives, which might be a consideration for budget-conscious hobbyists or businesses.

2. Limited frequency range: The coupler may not be suitable for all frequencies, so it's essential to check the specifications to ensure compatibility with your antenna and transmitter.

The Harvey-Wells Bandmaster Antenna Coupler Partially Z-Match offers numerous benefits, such as improved performance, versatility, and durability. While the cost might be a drawback for some, the overall performance enhancement and convenience it provides can justify the investment. If you're looking for a reliable and efficient antenna coupling solution, the Harvey-Wells Bandmaster Antenna Coupler Partially Z-Match is an excellent choice.

Details:

I can only vouch for the testing performed as described herein. Further cleaning and calibration, plus re-painting, is strongly suggested. The sampling portion of wattmeter circuitry is contained within a sheet metal sub-chassis see photo that secured to main chassis via 4 screws.

Reading the qts article is a big help in that regard. The cabinet appears to be copper plated and there is an unpainted strip along edge of that mates front panel.

The components are high quality, with bud variable capacitors and electronic pi-Dix coil assemblies. There are 3 pots for setting the ranges on chassis. There was some intermittency in the range switch and appropriate high quality contact cleaner applied. No testing of the coupler circuitry was done.

A grounding stud is provided on the back panel. The dummy load was functional.

Buyers should also note that this is a vintage electronic device around 60 years old, and components can do age, causing changes in performance. Besides being of interest to Harvey-wells collectors, it should be noted that the size, shape, and color item is very similar famous Collins km-1 Teri-band transceiver era could make an acceptable companion piece if desired. There is a special part of the sampling network that consists multiple resistors in parallel.

Briefly, the main features are: accepts a 50 ohm coaxial connection from transmitter or transceiver in modern times provides an internal watt dummy load for testing and tuning non-inductive lobar resistor that measures 43 ohms at dc antenna coupler transforms unbalanced output into balanced driver use with open wire ladder line transmission systems to hf loads by-pass path cable lines, but no impedance matching signal wattmeter reads either forward reflected power full scale ranges of 10, 1 1000 watts it does not require any ac has The 10 watt range appears to be quite accurate, but 100 and 1000 ranges will need calibration. The call letters of a prior owner are painted on bottom cabinet, but would easily disappear if cabinet is repainted.

There were no insects or mouse droppings inside - the item has been well cared for. Close examination of those resistors showed that they may have gotten a bit warm in prior service, but seem to be functional at this time. Note that the meter can only read forward and reflected power separately, not simultaneously as do many modern dual scale meters.

This used instrument is in good physical condition and to very electrical. That is a good feature for draining static charges off the coax if any are introduced by antenna system. Before you bid, please make certain that understand what this device is and it does.

It has no effect upon the RF signal but does give a dc ohms reading of about 20 or so. The main physical issues are multiple paint scrapes and chips on exterior of perforated steel cabinet missing inserts in centers 2 large knobs see photo qts article which shows z-match with place. There is no band switch. The by-pass route was only tested for dc continuity, not RF performance.

It was featured in a may, 1955, article qts, as both product review and construction project rather unusual double feature. The interior was very dusty but cleaned up quite nice when vacuumed. One set is for the lower hf bands and other upper.

That article is available on-line and I suggest anyone who considering this item do a search, find the article, read it thoroughly. Connections to balanced lines are made via two sets of binding posts on the back. The wattmeter was tested and found to be operational.

Coaxial connections are made via standard so-239 chassis connectors. Fresh from the mid-1950s comes this Harvey-wells electronics z-match combination RF wattmeter, balanced line coupler, and dummy load, all in one cabinet. I acquired this interesting item as part of a recent lot purchase radio equipment.

The steel chassis appears to be cadmium plated and shows no rust. 5 mh RF choke connected across the coaxial input.

specifications speakepar:

• brand: Harvey-wells
• bundle listing: No
• country/region of manufacture: United States
• features: Includes Internal 50w Dummy Load
• type: Wattmeter Balanced Line Coupler
• ham bands covered: 80m Thru 10m

General speakepar:

• condition: Used
• consumer electronics > radio communication > partsaccessories > speakers
• in stock: Yes

Seller speakepar:

• zipcode: 52310
• city: Monticello, Iowa

Returns speakepar:

• policy: no returns

Ratings:

1. fast ship, well packed, easy transaction. Thanks ! 09-26-17
2. A seller would buy from again 09-14-17
3. Fast Shipping, Easy Transaction, AAAAA 08-11-17
4. Good buyer, prompt payment, valued customer, highly recommended. 12-15-17
5. good buyer. Looking forward to our next business. 07-26-17

Offer speakepar:

• bids: 0
• quantity: 1
• Sold: 0
• best offer: false
• Started: January 16, 2018, 10:06 am
• min. bid: $75.00

Shipping speakepar:

• type: Calculated
• handling: 3 days

Payments speakepar:

• PayPal