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Re: Anyone used Eglink in Korea for test equipment?
International bank transfer (wire transfer) is the standard for international transactions for decades. Either with or without a Letter of Credit. A wire transfer with a Letter of Credit is totally safe but very expensive. The buyer has to arrange for a Letter of Credit with his bank which which will collect the money and fees and transfer the sum to the sellers bank. Only after the seller has shipped the items and provides shipping and customs documents the money is relased.
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I agree that Western Union is to be avoided by all means. vy 73 Heinz DH2FA, KM5VT Von meinem iPhone gesendet Am 12.03.2013 um 17:19 schrieb Steve Vineyard <willltinker@...>: That may be, but it has been all over the news that if they request |
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Re: Anyone used Eglink in Korea for test equipment?
On Tue, Mar 12, 2013 at 10:58 AM, David Kirkby <david.kirkby@...> wrote:
On 12 March 2013 16:09, David DiGiacomo <daviddigiacomo@...> wrote:It's a risk to the seller, not the buyer. If it's a stolen card, youOn Tue, Mar 12, 2013 at 8:41 AM, Steve Vineyard <willltinker@...> wrote:Why do you say "foreign credit card transactions are a huge risk?"Wiring the money is a BIG RED FLAG. Stop, turnaround, and never come back.Look at it from the seller's point of view... foreign credit card can get a chargeback months later, and have no recourse. |
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Re: Anyone used Eglink in Korea for test equipment?
David Kirkby
On 12 March 2013 16:09, David DiGiacomo <daviddigiacomo@...> wrote:
On Tue, Mar 12, 2013 at 8:41 AM, Steve Vineyard <willltinker@...> wrote:Why do you say "foreign credit card transactions are a huge risk?"Wiring the money is a BIG RED FLAG. Stop, turnaround, and never come back.Look at it from the seller's point of view... foreign credit card Lots of people make foreign credit card transactions every day to people they don't know. If the risk was considered huge, this would simply not happen. Any transaction has some risk, but I don't think one can consider it a huge risk. But wiring money is very risky. Dave |
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Looking for s-param test set, non-working, for 8753
Peter Gottlieb
I am looking for a test set for the 8753. Ideally I'd like to get a 85064A which has blown couplers or a B. I'm going to be doing some mods in the thing. I could even use a 85047A with blown couplers.
I see them pop up on the bay here and there but wondering if anyone on this list has something first. If you have something, contact me off-list to let me know what you have and how much you want for it. Thanks, Peter |
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Re: Anyone used Eglink in Korea for test equipment?
That may be, but it has been all over the news that if they request wiring the money it is usually a sign of a rip off. I avoid anything that looks the least bit fishy on the internet. Too many scams.
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Steve David DiGiacomo wrote:
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Re: Anyone used Eglink in Korea for test equipment?
On Tue, Mar 12, 2013 at 8:41 AM, Steve Vineyard <willltinker@...> wrote:
Wiring the money is a BIG RED FLAG. Stop, turnaround, and never come back.Look at it from the seller's point of view... foreign credit card transactions are a huge risk. Why shouldn't they require a form of payment that's safe for them? |
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Re: Anyone used Eglink in Korea for test equipment?
Wiring the money is a BIG RED FLAG. Stop, turnaround, and never come back.
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Steve Bob Stewart wrote:
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Re: making 50 ohm measurements with a 75-ohm s-parameter test set
David Kirkby
On 9 March 2013 02:41, bdunn246 <bdunn246@...> wrote:
Hi all-I thought you would. I think most people who own a VNA will at some point want to measure a two port device like a filter. I sometimes want 3 and 4 port devics, but for what I want (directional couplers), I make do with swapping the ports around manually. 4-port VNAs are not that common on the used market at sensible prices. For my planned antenna return loss measurements, I see your point, David, that 30 dB is probably excessive. Perhaps 25 dB +/- 3 dB is a more realistic goal. I wonder, at my target frequencies (up to 450 MHz), could i reach this goal if I built my own cal standards for open and short using N connectors?At that frequency, your 25 dB +/- 3 dB can be met. The loads wont be a problem, but I don't know of any way to make your own opens and shorts in N which work well. I've spent a lot of time/trouble doing this properly making use of a combination of 3D electromagnetic simulation, measuements with a professional calibration kit, and custom software I wrote to extract the parameters. If you calibrate a VNA with a professional N calibration kit, (85032B, 85032F, etc) then measure the female open standard, you will find that the point rotates clockwise around the Smith chart as the frequency is increased, as theory says it should do. Then if you disconnect the open standard, and just leave the cable open, you will find it goes the other way! There is a MASSIVE difference between what the female open standard in the firmware of your VNA to that which you will get if you leave the cable open. I designed and sell a reasonably priced cal kit (I'll do it 20% less than those prices). which includes * Two opens * Two shorts * Two loads * Male to male barrel, with known delay * Female to female barrel with known delay * Attenuator with S-parameters. * Data on USB stick Using the attenuator and the data on the USB stick, you can confirm you get similar results of both magnitude and phase to a professional VNA measuring the same attenuator. Using the barrel connectors, and entering their delay as a port-extension, it is possible to make measurements on non-interstable devices like those with two female Ns or two male Ns. Lots of components have just female Ns, and of course that screws you up since you can't do a simple SOLT 2-port calibration with two male connectors on your test leads, as there is no way to make the thru connection. Generally I would suggest having a male plug on one test port cable and a female on the other. Then you can do a thru calibration joiinging them together with no adapter. If you want to measure something with two female or two male connectors, then add a barrel after the calibration and compensate for it by entering the delay of the barrel. More modern analyzers have other ways of getting around this problem. My own HP 8720D VNA has a technique called "adapter removal" which allows one to do this, and in fact will also cover the cases where one device has SMA and another N. HOWEVER, it is a tedious process, requiring two full 2-port calibrations. That's a LOT of standards to connect and disconnect. Even later analyzers have improved methods for this. Thanks,Dave |
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Wanted 85054B type-N 18 GHz calibration kit for VNA
David Kirkby
Has anyone got one of these they want to sell? If so, please let me
know your price and send me some pictures. I want to see: 1) Overall picture of the complete kit. 2) Individual parts 3) List of part numbers printed on the devices. 4) Photo of underside of the box. 5) A photo showing the complete kit, with a picture of a cup or mug there. This is so I can verify with a resonable degree of certainty the item actually exists, and is the photo is not just copied off the web. 6) Payment methods accepted. Dave |
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Re: Anyone used Eglink in Korea for test equipment?
Bob Stewart
I wouldn't touch it.? In fact, I wouldn't touch anything that wants me to pay in the equivalent of cash poked through a slot.? However, I've never dealt with them.
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Bob ________________________________ |
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Anyone used Eglink in Korea for test equipment?
David Kirkby
I'm looking for an HP 85054B type-N 18 GHz calibration kit. A company
called Eglink in Korea says they have one, but they want the money wired, and I'm not keen to do that. In fact Firefox wont even let me look at the site without making an exception, as it is supposidly been identified as a source of viruses Certainly not my first choice when it comes to buying things, but I might just consider it if I can find out more about this outfit. Only recently I noticed that if an item is NOT bought on eBay, but Paypal is used to pay for it, the buyer is only protected in a few countries. The UK and USA are two of them, but it is quite a small number. I once sent a few hundred Dollars to Hong Kong via Paypal. Luckily it worked out OK, and I got the goods, but I later reailized I had no comeback at all. If the item is bought on eBay, then it is diffierent and I think Paypal will cover the buyer irrespective of the location. Dave |
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Re: Power indicator lamps.
I really don't know the current. The manual specifies the voltage as 6.3 but no current spec. I'm guessing 150 mA. There is nothing but a Boonton part number.
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Regards. Max. K 4 O DS. Email: max@... Transistor site Vacuum tube site: Woodworking site Music site: To subscribe to the fun with transistors group send an email to. funwithtransistors-subscribe@... To subscribe to the fun with tubes group send an email to, funwithtubes-subscribe@... To subscribe to the fun with wood group send a blank email to funwithwood-subscribe@... ----- Original Message -----
From: "J. Forster" <jfor@...> To: <hp_agilent_equipment@...> Sent: Monday, March 11, 2013 4:44 PM Subject: Re: [hp_agilent_equipment] Power indicator lamps. Try looking at, or calling, one of the internet bulb companies, like |
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8657A Signal Generator Spare Parts
Dear All,
I wonder if you can help me with the spare parts needed to move the RF-Output (hp 8657A, Option 002 Rear Panel RF Output) to the front panel. Probably you have a parts unit, so that you can offer these parts to me. What exactly I am looking for is the long semi-rigid cable on the left hand side in this photo, including the N-Connector: <> According to the service manual, cable and N-connector should come in two parts, SMA-connected: - hp Part-No 08657-61006 9, SEMI-RIGID CABLE 2.18 SMA-NONE - hp Part-No 5061-5386 0, CONN ASSY TYPE N Additionally it would be helpful also getting the bracket to fix the N-connector: - hp Part-No 08656-00147, BRKT OUTPUT CONN Because the semi-rigid cable connecting attenuator and F-connector is damaged at the instrument I got recently, I would like to take the opportunity moving the output connector to the front panel. I am located in the EU (Austria), but the parts could be sent to an address in NY, if that is easier for you. Thanks for help. Johann |
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Wanted, in UK: 16500B CPU board
All,
Having gone as far as I can in my attempts to upgrade the RAM in my 16500A logic analyzer, and found that it's a dead end with the early CPU board it has, I would like to fit a later CPU board to it to make it useful with the plugins I've got. I've experimented with the CPU board out of my 16500B (I've got one of each) and it seems to run fine in the 16500A chassis, now I've made an adapter cable for the video connection. I will clearly have to adapt the hard and floppy drives, but that can be done with parts I've got lying around. Does anyone have a 16500B CPU board they would be prepared to part with? I'm happy to pay money, and trans-atlantic shipping if needed. There was one at a reasonable price on eBay recently but I missed it, sadly. Thank you Chris Cambridge, UK |
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Re: Power indicator lamps.
J. Forster
Try looking at, or calling, one of the internet bulb companies, like
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BulbsDirect. You'll need the voltage, current, and OD. They should be able to help. Good luck, -John ================ They have wire leads which are soldered to terminal strips. |
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HP 973a multimeter successful fixing
Hello group,
Recently I sent a post about a problem with my digital multimeter ¨C malfunctioning when measuring resistances. It shows wrong, higher than expected values and was very slow to react. When crossing the probes I had 10-15 ohms. All the other functions apparently was ok. So, with a friend of mine we decided , to follow the advices of some of you and particularly ¨C Stan ( thank you Stan!). We first disassembled the rotary switch. The contacts seemed clean but there was obviously some kind of transparent substance (lu bricant?) over them. I've cleaned carefully with isopropyl alcohol and reassembled all. To my surprise, everything was back to normal: exact resistance values, fast measurement, when shorting the probes - 0,5-0,4 ohms. So, the rotary switch apparently participle in the measurement process, and the resistance function is the first to be impaired when some thing is wrong with contacts. Now I have a nice multimeter and calibrated! Thanks again for the help. All the best, Simon |
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Re: Power indicator lamps.
They have wire leads which are soldered to terminal strips.
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Regards. Max. K 4 O DS. Email: max@... Transistor site Vacuum tube site: Woodworking site Music site: To subscribe to the fun with transistors group send an email to. funwithtransistors-subscribe@... To subscribe to the fun with tubes group send an email to, funwithtubes-subscribe@... To subscribe to the fun with wood group send a blank email to funwithwood-subscribe@... ----- Original Message -----
From: "J. Forster" <jfor@...> To: <hp_agilent_equipment@...> Sent: Monday, March 11, 2013 8:38 AM Subject: Re: [hp_agilent_equipment] Power indicator lamps. Do you mean a 'wedge based lamp' Or possibly a Bi-Pin?? |
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Re: HP 477B Thermistor Mount
It very much depends on the measuring current too. But for an 478A measured with an ohm meter that sound ok to me (from memory...). Should be similar to a single 477A, no?
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? 73 de Harke --- On Mon, 3/11/13, curlytronics <curlytronics@...> wrote:
From: curlytronics <curlytronics@...> Subject: [hp_agilent_equipment] HP 477B Thermistor Mount To: hp_agilent_equipment@... Date: Monday, March 11, 2013, 1:31 AM ? Does anyone know what room temperature resistance can be expected from a 477B thermistor mount (200 ohm, negative)? The manual says 3000-4000 ohms. I have one that is 5380 ohms. Is this too high to work properly with a 430C, i.e. has this thermistor been damaged from being overpowered? Curly |
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HELP: HP66319D schematic
Hi all,
I'm trying to rescue my HP66319D power supply. The trouble seems to be in an analog section, since I can still program voltage & current. Under load, the output still delivers the juice (even up to 3A), but becomes very noisy (noise bursts occurs every 1.8ms. If I connect 470uF accros the output, things got better. The service manual seems to be non existant (This is even not orderable from Agilent). I don't know it the output section is similar to the HP66332A or HP66312A which service manuals exist on Agilent website. Thank you in advance for your advice. Bests Lang |
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Re: LIF File Conversion.
Jay:
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Indeed, that was the goal. And after I did that, I found that the file I had recovered was not an ASCII file, but a hex encoded tokenized basic file. This file was just as it was on the LIF diskette. So I was sucessful! But TransEra HT Basic will not read that file.... Dan in Chandler, AZ ================================================== --- In hp_agilent_equipment@..., "jayw_comark" <jayw_comark@...> wrote:
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