Drake's twins began with the R-4 and T-4X in the mid-1960s, and the T-4XC is the transmitter half of the 1973 C-line. It has no receiver of its own. It's built to sit beside an R-4, R-4A, R-4B or R-4C and share one VFO for transceive. With an R-4C you can also link the carrier oscillators and the PTO lamps, so the pair works like one radio. WB4HFN says the C-line brought more solid-state parts, a dual-dial VFO and a plug-in antenna relay in the T-4XC. It's a 200 W input SSB, CW and controlled-carrier AM transmitter with a matched pair of 6JB6A finals. It needs the AC-4 supply, which hides inside the MS-4 speaker. Collectors want it with a matching R-4C, the cables and a recapped AC-4.
80, 40, 20, 15 m and 28.5 to 29.0 MHz with supplied crystals; 4 extra 500 kHz ranges, 1.8 to 30 MHz
Modes
SSB, CW, controlled-carrier AM; RTTY adaptable
Power
200 W PEP input SSB and AM, 200 W CW; about 120 W out
Finals
Matched pair of 6JB6A, 12BY7A driver
Power supply
External: AC-4 (120/240 V AC) or DC-4 (12 V DC)
Weight
14.6 lb
Also listed as
T4XC, T 4XC, Drake T4XC
Typical eBay ask (Oct 15, 2026)
$110–$290
Bench check
Power, receive, finals and supply
Transmit power
Drake rates input at 200 W PEP on SSB and AM and 200 W on CW, and rigpix puts output near 120 W. Ask for a wattmeter reading into a dummy load on 80, 20 and 10 m after a proper tune-up. WB4HFN chased output that jumped around and then quit as the set warmed up, and found a cracked diode, CR19, in the 12BY7 driver's cathode.
Finals
Two 6JB6A tubes, shipped as a matched pair, driven by a 12BY7A. Drake warns that plate current above 0.15 A for more than 5 or 6 seconds off the dip wears the finals fast, and says to neutralise after replacing them. Ask for a photo inside the PA cage and whether the tubes have been changed.
Power supply
It needs a separate supply: the AC-4 for 120/240 V AC, which fits inside the MS-4 speaker, or the DC-4 for 12 V DC. WA8SAJ says failing bias caps in an old AC-4 can let the 6JB6s run red-hot and burn up. Ask whether the AC-4 has been recapped.
Dial and display
Tuning is a solid-state PTO on an analog dial marked in 1 kHz steps across each 500 kHz range. WB0IQK's notes cover dried lubricant on the PTO screw drive and the dial skirt's rubber bushing hardening. Ask for a video of the dial turning smoothly with the lamp lit.
Filters and options
SSB comes from built-in 8-pole crystal lattice filters. The options that matter are accessory crystals for extra 500 kHz ranges (four rear sockets plus a front fixed-frequency socket) and the low-capacity cables for transceive with an R-4C. Ask which crystals are fitted and whether the cables come with it.
Should come with it
The AC-4 power supply, often mounted in an MS-4 speaker
The low-capacity injection and carrier oscillator cables for an R-4C
A high-impedance mic with a 0.210 inch three-conductor plug
The Drake manual
Check the listing photos against this list, and ask the seller about anything you can’t see. A missing piece should come off the price.
What to check
WB4HFN traced erratic output that got worse with heat to a cracked CR19 diode in the 12BY7 driver's cathode. In the AC-4 supply, aging bias caps can leave the 6JB6s conducting hard enough to glow red, per WA8SAJ. Drake's manual warns that tuning off the dip for more than a few seconds wears the finals.
01Power out: Ask for a wattmeter reading into a dummy load on 80, 20 and 10 m after tune-up. Steady output near 100 W or more is healthy.
02Warm stability: Ask whether power stays steady once it's been on a while. Output that jumps or fades as it warms points at the driver.
03Final tubes: Ask for a photo of both 6JB6A finals in the cage and whether they were replaced. A replaced pair should have been neutralised.
04Dial: Ask for a video of the dial turning with the lamp lit. It should move smoothly and slip to set calibration.
05Crystals: Ask which accessory crystals are fitted and for which ranges. Crystals for segments outside the ham bands are only for authorized MARS or CAP stations.
06Power supply: Check for the AC-4, often inside an MS-4 speaker, and ask whether it's been recapped. The T-4XC can't run without it.
07Transceive cables: Check the photos for the low-capacity injection cables if you're pairing it with an R-4C. The manual calls for those specific cables.
08Mic and manual: Look for a high-impedance mic on the three-conductor plug and the Drake manual. The manual covers tune-up and neutralising.
09Model number: Check the panel reads T-4XC. The T-4XB is the earlier B-line version.
We'd buy radios-n-stuff's T-4XC at $351 delivered, the only one titled tested, from a 99.9% seller, though no power reading is given. There are at least 6 for sale, and the two hamandhifi sets at $90 delivered are parts donors, since one photo shows no knobs, meter or dial and the other a bare chassis out of its cabinet. Complete sets that are untested or carry no claim ask $173 to $315 delivered. None is titled with the AC-4 supply it can't run without, so budget for one and ask whether it's been recapped, because aging bias caps can let the 6JB6 finals run red-hot. Ask for a wattmeter reading into a dummy load on 80, 20 and 10 m.
Listed now
6
For parts
0
Typical ask
$110–$290
Full range
$45–$330
★Cheapest
$350.97est. delivered
The only T-4XC here titled tested, so it's also the cheapest one sold as working, at $351 delivered. No AC-4 supply is named, so budget for one, and ask for the wattmeter reading behind the test.
Titled untested at $173 delivered, but unlike the $90 pair the photo shows it whole, with its knobs, meter and dial. Pay project money, since nothing says it transmits.
Drake T-4XC Vintage Ham Radio Transmitter (SN 20757, untested)
Delivered prices include shipping as eBay quoted it to a US address on Oct 15, 2026. Many sellers charge by distance, so your total may differ. eBay shows yours before you pay.
Snapshot
For sale on eBay
6 of 6 listed
Checked . Some may have sold.
Delivered prices include shipping as eBay quoted it to a US address on Oct 15, 2026. Many sellers charge by distance, so your total may differ. eBay shows yours before you pay.