Wiltron 6640a Sweeper 26.5 To 40 Ghz Signal Generator Microwave Cw 50 Ghz Harmon

US $1000

Diamond Bar, California, United States
Jun 4th

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this is for one Wiltron 6640A Sweeper 26.5 to 40 ghz Signal Generator, so heres the low down on this model. I read the spec sheet and its not a good cw generator since its not phase locked and has no amplitude levelling control internally though I think it can probably be controlled with an alc however Im not sure. it puts out a constant stream of +5 db , I couldnt check the flatness because I dont have the right waveguide adapter(nor cable rated past 26 ghz) so I just had to put the waveguide pointing into my 3.5mm cable with 26 ghz rating. seemed to do the job, just lost about 3 db-6 db of gain or so. you can see in pics particularly at the top end it does say unlevel on the led but I think its probably normal since this model is identical to the lower ghz models but the lower ghz models have built in levelling , but this particular one was not designed with it so the spec sheet says. also the more expensive 40 ghz models say unlocked when it sweeps and locked in cw mode and thats normal apparently . this is a barebones 26.5 to 40 ghz sweeper and it excels more at sweeping than cw. in cw mode its off by 20 to 50 mhz in freq accuracy, im not sure if this is within or outside spec since its such a simple budget model generator. its really lightweight for an old model because it doesnt have much to it. there is no real filtering of the harmonics I can see which can be a good thing if you need it to sweep an unflat 50 ghz as shown in pics. Im still wondering how flat it would have been with the right waveguide to sma adapter. the signal it puts out is fairly clean if it was phase locked as shown in pics ,(but since its not freq bounces left and right) I hear you may be able to phase lock it to a counter but I have no idea what thats all about. it mentioned that in the spec sheet which I can include with it. for the right application you could be very happy with this budget model but for anyone using it for calibrations or tight measurements its not recommended. you will need to shell out 5000$ or so to get that in this freq range. I cant guarantee this will pass or fail cal specs but it does work for the most part as its intended to and may be calibrateable to be more accurate. I have no experience with this model. Sold As-Is this unit comes as advertised , returns only if its not as described when you receive it. Read my 100 Percent Positive FEEDBACK! My feedback says it all! I accept Paypal or cash in person on pickup. I have testing equipment here you can use to verify it works perfectly. serial upon request For test equipment I am the largest used Stanford Research Systems dealer in the world. I am also known for my HP / Agilent spectrum analyzer and function generator sales as well. For test equipment I am very knowledgeable with SRS and HP agilent equipment : pricing , testing,reconditioning, and fixing basic issues. Every price that is listed is a price that the same unit sold for before at least a few times. I am not like the other dealers who list for rediculous prices that no one has ever bought it for in hopes they can make themselves rich. All my prices sci elec test instruments are fair going rate prices. Please feel free to email me any questions as I will respond immediately! Most items look much better in person. international shipping rates are 120$ to 550$ depending on the country but usually about 350$ to 450$ for a spectrum analyzer measuring 28x22x18 inches 50 lbs. message for a formal quote before buying ! south america will be 550$. mexico is 250$. canada is 120$ to 200$ since it goes ups ground , I use ups ground, fedex ground, tnt and usps ems . I can also bill to your acct number if preferred. north, south and west europe is cheap , only around $250 to 350$.south america is 550$ I ship anywhere in the world !!!! Please email me your address for shipping quote if outside the USA .I fully insure all Items and pack everything extremely well! Also If you buy the item> please send your address in this format: Name: Street adress: City: State/Province: Area code/zip Code: Country: Phone Number : Make sure you send your phone number! it is required for national and international shipping! : generally worldwide shipping is really cheap compared to other sellers because I have a 50% discount with fedex priority express thru my friend, its only around 300$ to most countries and thats fully insured and usually trackable in detail. australia is a bit more , around -400$-500$ because its the most expensive country to ship to by any carrier.. Pickup is completely fine as well> I am located 30 minutes Los Angeles California