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Sales Bulletin 0105009
Environmental Standard MIL STD 810F

We have recently completed a full environmental evaluation of one of our Military Tactical Amplifiers the KMW2030, which covers the 30 to 512 MHz band with 125 Watt output power for just 1 watt input power. These tests are extensive and time consuming, but once completed you have the assurance that the equipment can deal with some pretty arduous conditions. Often referred to simplistically as “Shake and Bake” there is in fact a lot more than just vibration and heat testing done to the equipment. The KMW2030 data sheet now lists the full set of tests that the US Army insisted on being completed before shipment of a recent large order. The following text shows the summary of those tests, if you need more detail on the actual tests we can send you that material or you can download the complete 810F spec from the Web.

1. Humidity:
Mil-Std 810F, Method 507.4, para.4.5.2
24 hour pre-conditioning @ 23c & 50% RH and then 5-48 hour temp./humidity cycles with extremes of 60c 95% RH, 30c 95% RH and 20c 95% RH. Operational test to be performed every 24 hours. 11 days duration

2. Salt Fog:
Mil-Std 810F, Method 509.4, para.4.5.2
Pre-condition sample @ 35c for 2 hours prior to start of test. Expose sample to 24 hours of 5% salt fog exposure, remove sample from chamber for 24 hours of drying, place sample back into chamber for another 24 hour 5% exposure and remove from chamber for another 24 hour drying period. 4 days duration

3. Sand & Dust:
Mil-Std 810F, Method 510.4, para.4.4.2
Per procedure 1 of Mil-Std-810F. 1 day duration

4. Altitude (Storage):
Mil-Std 810F, Method 500.4, para.4.5.2
Adjust to 15,000 f t. with sample in it's storage/transport configuration. Maintain Altitude for 1 hour. Return to site pressure and conduct operational check. 4 hours duration

5. Altitude (Operation):
Mil-Std 810F, Method 500.4, para.4.5.3
Adjust to 15,000 f t. with sample in its operational configuration. Conduct operational check of sample. Return to site pressure and conduct operational check. 4 hours duration

6. High Temperature (Storage):
Mil-Std 810F, Method 501.4, para.4.5.2
Stabilize sample @ +70c. Maintain temperature for 2 hours. Return sample to ambient temperature and perform operational check. 1 day duration

7. High Temperature (Operation):
Mil-Std 810F, Method 501.4, para.4.5.3Stabilize sample @ +50c. Maintain temperature for 2 hours with sample operating. Return sample to ambient temperature and perform operational check. 1 day duration

8. Low Temperature (Storage):
Mil-Std 810F, Method 502.4, para.4.5.2
Stabilize sample @ -40c. Maintain temperature for 2 hours. Return sample to ambient temp. and perform operational check. 1 day duration

9. Low Temperature (Operation):
Mil-Std 810F, Method 502.4, para.4.5.3
Stabilize sample @ -20c. Maintain temperature for 2 hours with sample operating. Return sample to ambient temp. and perform operational check. 1 day duration

10. Temperature Shock(Steady State):
Mil-Std 810F, Method 503.4, para.4.4.2.1
With sample @ ambient temp. place into chamber @ -40c and stabilize sample, transfer in less than 1 minute to chamber @ +70f & 25% RH and stabilize, then transfer in less than 1 minute to chamber @ +50c and stabilize sample. Return sample to ambient temp and perform operational check. 2 chambers required. 10 hours duration

11. Vibration (General):
Mil-Std 810F, Method 514.5, para.4.5.2
Various levels and duration of vibration in three axis, with up to 3G transitions. Operational tests to be made before during and after the testing. 4 hours duration

12. Vibration (Loose Cargo) Modified:
Mil-Std 810F, Method 514.5, para.4.5.3
With sample packaged and unrestrained, using 1 inch constant vertical linear motion, expose for
1 hour with bottom of package down, stop exposure and perform operational check of sample. Place back onto shaker with bottom of package facing parallel to the shaker head and expose for another hour. Remove from shaker and perform functional check. 5 hours duration

13. Shock (Functional):
Mil-Std 810F, Method 516.5, para.4.5.2.3
With sample operating, expose sample to 3 pulses/direction of saw tooth shock @ 40g 11ms. 6 directions for a total of 18 pulses. Operational check of sample to be performed following exposure. 4 hours duration

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