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I am interested in the caps used here. http://qrp-labs.com/bpfkit.html They look like they may have some good characteristics. Does any one have a lead on them and a source here in the USofA?

What these corkscrew anchors do work great for is securing the tripod base for something like a Buddipole, to keep it from tipping over in the wind. Used with a bungie cord it eliminates the need for

chuck adams writes: I have with the smaller HC49S crystals, but not with the standard HC49U. These crystal filters are LSB filters, that is, the BFO frequency is higher than the IF frequency to pass

Howdy Gang. Have almost all of the parts on hand or on order for the NC40A build save for the 1SV149/MVAM109 diodes. Anyone out there have any spares?…I need two. I can trade J310’s for the

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the [email protected] group. *File:* NorCal40A Simplified Assembly Document .pdf

Note that for the "other" 2 crystals in addition to trimmers the transmit mixer has inductance help to pull it in the right direction. The detector trimmer C17 pulls X5 around 1.5 KHz and the transmit

Great question. I figure if I don't need to worry about the BFO and TX mixer crystals, I can get a lot more sets of 4 matched crystals. john - n0hj wrote:

I think a more important question is the following. Has any one found a crystal that they put in the BFO or TX mixer that was not capable of being adjusted to desired offset with a 50pF or 60pF

John - both the TX mixer and BFO have trimmer capacitors, so they don't have to be that close.

Greetings all, I know the filter crystals should be as close as possible in parameters. How close to the match do the BFO and Mixer crystals need to be? Is it safe to assume that the BFO crystal can

to Group.? I would love to have a few like the blue gif which is like Radio Shack! Ollie?? k0lqk

If the ground is damp it will work. I've used one before. Probably not as good as a long ground rod but it worked for me at the time.

I have been wanting to try my hand at a surface mount project for a while, I think this would make an EXCELLENT one! If gerber files are made I will definitely build one or three. Once I'm done with

OK, I didn't mean to sound grumpy and I apologize. Doug, KI6DS, I send boards to before announcing the mailing and I know that he is going to build one and he did for the Colpitts Osc.? In fact, I

Hi! This has been in my wish list for a very time. As a QRPer and a homebrewer , it would be sacrilege if I dont make one. We still have local electronics market here in India and leaded components

Thank You for answers. I see 1SV149 in ebay and purchase 10 pcs. Thank You for suggestions. 73! LZ1DPN Dimitar

I have a couple of these ground anchors. It's a chrome plated steel rod shaped as a corkscrew. They are about 18 inches long and might be used to ground a station temporarily while working in a park,

Yes, it is 50x50.? My other Colpitts is 100x50 due to the DJ3KK counter. I'll relook at the posting...

Chuck Carpenter,?do you want a 500pF varactor?Then why not live with 1SV149?they are avaialable on ebay and not costly. i had bought from this guy, thrice. 10pcs 1SV149 Variable Capacitance Diode

Just a word of caution on buying bnc connectors off Ebay. Make sure if you want 50 Ohm connectors that is what you are getting. A large proportion of those for sale on Ebay are 75 Ohm, the giveaway