开云体育

Receiver performance has many dimensions. ?Sensitivity ?Bandwidth ?Overload performance and dynamic range. ?Stability, Especially important in the days of VFOs. ?Spurious signals, birdies and

Allison,?? Please don't get offended as this is just my 2 cents worth. Of your list, only RFParts has the?RD16HHF1. Ordering 4 for $19.00 and a dollars worth of something else to meet the $20.00

Also, keep in mind that if you plan to move from the IRF510 to the RD16HHF1,? the uBitx final should have some adjustments to the transformer ratios and such. The RD16HHF1 is not quite a drop in

Going to 150ma should be fine, so long as those IRF510 tabs are not getting so hot that it's uncomfortable to keep your finger on it. But those bias pots are very touchy once you get into the active

Kees, Please put me down for two each of the Click Fix and AGC boards. Also interested in the SWR boards when they are available. 73, Kevin KB3OMM

On Sun, May 13, 2018 at 6:11 AM, <davesters@...> wrote: > ve7cws, > What would you change about the mic? Almost every one I have talked to on > the radio, says that it has a good sounding

Allison has quite a few posts here. None have discouraged experimentation with the IRF510's. Quite the contrary. She did however suggest you get your RF parts from reliable vendors, be they IRF510's

THe only place I buy RF transistors from is RFparts, Digikey, Mouser, Kitsandparts, and Jameco. When it comes to oddball or scarce parts its RFParts as they do stand behind theirs,?? RD16HHF there

There's a thread on the B40's sensitivity here. Signals were heard down to -130dbm and the results were verified. /g/BITX20/topic/5447469#30094 Vince. -- Michigan VHF Corp.

Gents and ladies, I don't post much as I'm a busy broadcast engineer.? But I try to read often. Allison's post contains wisdom. Education tends to be expensive.? If your goal is IRF R&D, then knock

Yes this was a popular way of varying the bandwidth of filters in its time. Varying the capacitance of the diodes via voltage to vary the roll-off frequency/sharpness of the filters. Quite simple to

Hi this an interesting read. https://www.google.com.au/search?q=Polida2008&rlz=1C1CHBD_en-GBAU782AU782&oq=Polida2008&aqs=chrome..69i57j0j69i60l2.1870j0j8&sourceid=chrome&ie=UTF-8? Cheers Kevin VK2KTG

Hi Jerry, What do you mean by "Be very careful about setting those pots to "a lot more" than 100ma,? that's a good way to make the IRF510's pop from the heat." What's? a lot more? I found I needed

I have checked all domestic sources of RD16HHF1 and for a quantity of 4, Polida2008 beats them all for price. They will get my order. Thanks for the recommendation.

Sorry too early in the AM for me evidently… uBITx.net as others have pointed out. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch –

You might try www.hfsignals.net <http://www.hfsignals.net> Most of the mods are listed there concisely by type and author. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ

Hi Norm, if you go to http://ubitx.net/ about the 7th line down, click on manual. Rod KM6SN

Sold! Thank you!

Hello, In Europe, you can order to https://sdr-kits.net/index.php?route=web/pages&page_id=55_55 ( https://sdr-kits.net/index.php?route=web/pages&page_id=55_55 ) but this is not the price of an IRF510