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Date Posted by Category User IP

2012-08-10 (UTC)



B&W 5100B AM/CW Transmitter **SOLD***


Up for sale is one of my Barker & Williamson 5100B's. I personally own several pristine examples and I am putting this one up for sale.

This is a very superb example of this noteworthy well respected transmitter. I have seen, restored and sold at least 36 examples at my work place. This is one is from my personal collection and is only one of three I have seen in this condition in recent years.

This particular one is mostly unmodified, with the exception of some coupling caps fattened up in the modulator to improve low-frequency audio response. Also a CL-60 thermistor was added to the primary of the plate transformer to eliminate the "clunk" when placed in transmit mode due to the inrush currents. The radio has been completely restored electronically. New components have replaced all old or aged parts, including resistors, capacitors and tubes.

The VFO is very stable, with little or no drift on most bands. The audio quality is quite good, as is expected from the 5100B in general, but as I mentioned I improved on this slightly by extending the low frequency response slightly in the modulator. All of the tubes are strong. I carefully matched the push-pull modulator tubes, and installed the strongest PA tubes I had in my inventory. (I have thousands of NOS 6146's).

The cabinet and faceplate is nearly pristine, with only the slightest surface scratches on the cabinet which are not very evident when you first look at the radio, you have to inspect it closely to find them. Inside the radio is immaculate. The knobs have not been "polished" and maintain the original matte finish. (I hate it when people ruin those nice matte knobs by doing that). Also the cabinet sports the original caps for the holes on the right side of the cabinet. These holes are for routing the cabling of the optional Sideband Adapter. These caps are missing on most examples of this transmitter.

I am beyond fussy about my personal gear, as it must be as near to new condition in order for me to spend the money to purchase it for my personal use. Since I own an electronics restoration business, of which this radio is not a part of, I have the pick of the litter so-to-speak. Again this transmitter is part of my personal collection, but it is now redundant to my needs since I have several other pristine examples, one being highly modified and the other in perfect stock condition.

The transmitter has been heard on the air for many years in the Northeast, since it was my first and primary dedicated AM transmitter. The one flaw is the analog dial is slightly off calibration, which is a very easy fix, but I never bothered since I use a HP frequency counter whenever tuning. If memory serves me, it is a little low compared to the actual frequency. Otherwise this transmitter is one the best I have seen in along time.

Here's a link to a large image of this transmitter: 5100b.jpg

I am offering this radio for $700 firm. Payment is via PayPal.

I also have the the matching 51B-SB Sideband Adapter. The cabinet is in similar condition and the faceplate shows some corner scratches. It is untested and was modified by the previous owner. I am offering this for $200 firm.

You can contact me via the email address listed on in my profile (the best way) or email address below (not checked as often). I am very busy so do not expect a response right away, however all questions, queries and requests will be answered and done so ASAP.

I can ship internationally. All shipping costs must be paid by the buyer in advance. The price above does not include shipping. The buyer must pay ALL duties and import taxes on their end. Once I have your address I can tell you exactly what the shipping costs will be. Keep in mind this radio weighs about 90lbs. It will be shipped in very protective packaging that will guarantee it will arrive to the buyer in perfect shape regardless of handling.

This item is sold "as-is" with all sales final. No returns are accepted.

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