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Re: Input protection of tinySA Ultra #ultra
Thanks Herb, I think a lot of people are attempting to use too much 'pixie-dust' and can't see the forest through the trees. We should realize the tinySA Ultra or variant, is just a VERY fantastic,
By Mike C. · #11057 ·
Re: tinySA Ultra firmware upgrade #ultra
It would have been nice if he had announced in the original thread he started about his firmware update problem that the problem had been solved.? You know, like how he wanted all the files in one
By Jim Allyn - N7JA · #11056 ·
Re: Input protection of tinySA Ultra #ultra
If your measurement can stand the loss of sensitivity, then using an attenuator as a possible sacrificial element certainly works. Some frequency domain measurements are performed on low level
By hwalker · #11055 ·
Re: Input protection of tinySA Ultra #ultra
I believe in the "KISS" method. Instead of trying to jump through all these 'protection' hoops, wouldn't it be easier to just go ahead and use a simple 'pad' (20db, 30db, pick your poison)? Mike C.
By Mike C. · #11054 ·
Re: Input protection of tinySA Ultra #ultra
It would be better to search for "Littelfuse". Easy mistake to make. For years I saw Littlefuse every time I looked at Littelfuse. 73 -Jim NU0C "JerryP" <jponko@...> wrote:
By Jim Shorney · #11053 ·
Re: Input protection of tinySA Ultra #ultra
When referring to an item being "junk", it would be nice if you identified that "junk" so as the rest of us would be privy to the true ID of said item. Thanks. Mike C. Sand Mtn GA
By Mike C. · #11052 ·
Re: tinySA Ultra firmware upgrade #ultra
The OP has solved his firmware update problem.... Vitaliy seems to have vanished after he got his problem fixed last week and was able to fix his problem. He posted about it in a topic I started
By Roger Need · #11051 ·
Re: tinySA Ultra firmware upgrade #ultra
I'm not sure that Vitaliy's problem is simply "driver not found."? He has some concern - apparently justified - that installing the driver in Windows will cause other problems in his system.? When
By Jim Allyn - N7JA · #11050 ·
Re: Multi band and Measurements
On Apr 5, 2023, at 3:56 AM, Toni Ciscar <aciscar@...> wrote: ? The Ultra has arrived from Zeenko in ten days (with FW TinySA4_v1.4-49). It is amazing, thanks Erik, and I am very happy because
By Terry Perdue · #11049 ·
Re: Input protection of tinySA Ultra #ultra
These are not suitable for protecting a Spectrum Analyzer or any Radio Receiver.? I bought one a few months ago and tested it.? It is junk... and that my friends is a very polite description of the
By John Cunliffe W7ZQ · #11048 ·
Re: Multi band and Measurements
The Ultra has arrived from Zeenko in ten days (with FW TinySA4_v1.4-49). It is amazing, thanks Erik, and I am very happy because it has connected directly to the same programs I use for the
By Toni Ciscar · #11047 ·
Re: Input protection of tinySA Ultra #ultra
When I look at the specs (these seem to differ a lot from the earlier mentioned 0.05pF and 5V max.? used in the tinySA Ultra kind regards, Hugo
By Hugo Coolens <hugocoolens@...> · #11045 ·
Re: Input protection of tinySA Ultra #ultra
A signal input of +20dBm, without upfront attenuation, will quickly damage your tinySA Ultra. Without attenuation it is specified to withstand +6dBm. Before the tinySA's were available for purchase,
By hwalker · #11044 ·
Re: Input protection of tinySA Ultra #ultra
To be fair the only thing that is not as advertised is the use of Shotkky rather than PIN diodes. The advert does state 10MHz to 6GHz and a max i/p of +20dBm. That spec makes it pretty redundant in
By G8HUL · #11043 ·
Re: Input protection of tinySA Ultra #ultra
You might want to try using a TVS diode like this for protecting SDRs and the TinySA: https://www.digikey.com/en/products/detail/littelfuse-inc/SP00R6-01WTG/15849687 Yes, they're tiny but you can
By JerryP · #11042 ·
Re: Input protection of tinySA Ultra #ultra
These are not suitable for protecting a Spectrum Analyzer or any Radio Receiver.? I bought one a few months ago and tested it.? It is junk...? Read my analysis at the link
By Roger Need · #11041 ·
Re: Input protection of tinySA Ultra #ultra
Hi Hugo I do not know the type of the diode, Erik is the one to ask. I have these impedance measurements amongst many hundred pages. When I locate them I will let you know Kind regards Kurt
By Kurt Poulsen · #11040 ·
Re: Input protection of tinySA Ultra #ultra
To say it civil, they #^%%$$ .don't waste your money.
By John Cunliffe W7ZQ · #11039 ·
Re: What are your priority parameters to save for quick loading of a scan setup? #ultra
I would love to see external gain / loss setting i.e. external amplifier John
By John Cunliffe W7ZQ · #11038 ·
Re: tinySA Ultra firmware upgrade #ultra
Hi Vladimir, My system is working fine but a year ago I had the problem similar to Vitaliy.? The problem was that the original path was too deep and Windows blew right past it while looking for
By Donald Kirk · #11037 ·