Part #: 622-4022-001

Model: WXT-250A

Collins Aerospace - Radar Tranceiver
Part Number :

WXR-270 system image shown, WXT-250A R/T located on left side of image
  • Radar Receiver-Transmitter used in WXR-270 Color Radar System
  • Compact and lightweight at 8.8 lbs.
  • 5 kw nominal transmitter power with 250-nautical mile range
Environmental: DO-138, AA/JN/AAAXXXXXX TSO: TSO-C63b, class 7
Altitude: 51000 ft. Dimensions: 4.980"H x 4.980"W x 12.535"L
Weight: 8.8 lbs. Transmitter Power: 5 kW nominal
IF bandwidth: Long range= 600kHz; Short range= 1.5 MHz STC: 25 nmi (12" antenna)
Power Requirements: +27.5VDC, +-10%, 3.75A nominal operating Time Delay: 60 to 80 seconds
Operating Frequency: 9345 +-30 MHz PRR: 120 Hz pulse repetition rate
Part NumberRadar Receiver-Transmitter Description:
622-4022-001 see details above


- Radar Transceiver

NSN: 5895-01-304-3879

Price Condition Delivery
$3,250.00 SV OUTRIGHT

SEA Repair Capabilities: Yes

Click on a question below to see the answer. If you have a question about this model that is not answered below, please contact

No, the Collins radar transceivers are not compatible with the KMD-850 Multi Function Display.
Yes, with the addition of the Avtech Digital Switching Unit (DSU) P/N 6001-1-1. List price for this unit is approximately $12000.
Weather radar transceivers use a magnetron which is basically a cathode emission device. The magnetron is subject to deteriorization due to aging. Therefore, it is recommended to perform some type of periodic maintenance to detect and correct the effects of aging. This reduces the chance of an in-service failure.

An annual, routine test of the following parameters should made:

- Power output
- Transmitter frequency
- AFC voltage
- Sensitivity (MDS)

Ideally, the test should take place between December and March prior to the peak thunderstorm season.
Southeast Aerospace exchanges are based on the return of an undamaged, economically repairable core unit with identical part number as the unit shipped to the customer. An "economically repairable" core is defined as one where the cost to repair/overhaul (or Repair Cap) does not exceed 80% of the original SV/OH exchange price billed. Should the Repair Cap exceed 80%, the customer will be billed the additional amount. In the event this amount exceeds the Outright Price for the unit, the customer would only be billed the difference between the Outright Price and SV/OH Exchange Price with the core returned as-is to the customer.

Here is an example of such a transaction:

$1000 Exchange Price charged to customer
$1000 x .8 = $800 Maximum Allowable core repair charge or Repair Cap

$2000 Cost to repair core unit
- $800 Less Core repair cap
$1200 Additional billing amount.

2200.00 Total Cost of transaction

Please Note:
SEA offers exchange on new items as well. However, repair cap as indicated above is still based on SV/OH exchange price.

Negotiating the exchange price of a unit only limits the allowable repair cap for the core unit. Southeast Aerospace's exchange transactions are based on the return of economically repairable core unit. Once the core is received and evaluated, the core repair cost incurred by SEA cannot exceed 80% of the original exchange price. That is, it cannot cost SEA more than 80% of the original OH/SV exchange price collected from the customer. Therefore, when and if an SEA exchange price is discounted, there is a risk that additional charges may be assessed once the core is returned and evaluated.

For more information, please refer to these other Exchange FAQs