Note there is no exact number that applies to all as the crystal filter uses real crystals and they vary from lot to lot. What that mes is for the BFO one guy has it right a 11.05552mhz and the next o

the earlier V3 and maybe 4 used 12.000 mhz crystals in the filter for a 11.995ish BFO. The latter version used 11.059mhz so the BFO (clk-0) would be about 3-4khz lower than that maybe around 11.055ish

Bruce, The MFJ is handy but its far from calibrated in frequency. Allison --------------------------------- No direct email, it goes to bit bucket due address harvesting in groups.IO

Dale, Correct save for NOS abounds and also poor quality copies. Its more be wary and careful. Allison --------------------------------- No direct email, it goes to bit bucket due address harvesting i

Bob, Mounting from the back side was only part of a complete mod. Do only partial and you get poor result. Basically for that iteration a half fast fix was not a fix at all. See the wiki for the fix a

When I see a 50 ohm BNC receptacle that is unreliable its likely because someone plugged in a 75 ohm into it and sometime verse visa. They have different plastic sizing and the center pin and socket a

I do not bother. I drill a .375" hole and use the locking hardware provided. Never seen one fall or jump out of the hole. Allison --------------------------------- No direct email, it goes to bit buck

I'm with Raj, Overdrive the audio and the output gets dirty fast. Drop the audio in small steps and if the harmonics drop faster its over drive. Allison --------------------------------- No direct ema

Farhan, Depends on the SA, the rigol and HP units I ahve that can be as high as 5 dbm for the rigol and 10dbm (with out attenuator on the HP8568B. You want to have the strongest signal near the base l

I got to play with a bunch of them last year and the result... The filters vary enough that a good one can easily exceed 40db and the average was 35db. One I hand optimized the filter did hit 45dB. Ov

Compared the wire you are using its likely not going to be a better antenna, expensive likely but not better. Making an effort to get what you have higher up might help depending on how high it is and

#ubitxv6

Pete and I go back some and I've shared a lot of knowledge and tricks with him. Like building radios using shielded compartments and 3D construction using the base and walls of said compartment for sp

#bitx20

Over the last three years (see the old and very large thread) the following were tried... MPSA10, 2n2222a 2n3866 2n5109 The BF959 is a low power VHF transistor and would be a poor performer except as

the parameter Cgs is not that much a factor for example the BLF278 a very nice 300W VHF device the input CCgs is 480pf! Its capacitance from gate to drain is a mere 14pf. That is important as its nega

Mark, Your speculating on a created phantom. The 2n2219 is a 2222A in a TO5 can vs to18 same Die. Datasheet enclosed for both from the same vendor! Allison --------------------------------- No direct

ozwelph Really? did you read the datasheet? also what current is the peak you expect? The problem with 2n3904 is at 30Mhz getting more than 10DB gain is not something reliable. However the design of t

Andy most are available but many places do not stiock so price is what it cost from them to get a minimum order from a maker. That way they can sell 10 and if that's it sit on the other 9990 which has

Hi ohwenzelph, Short memory, you were here during the thick out it all back when. Also anyone paying high prices for 2n2222A are nuts, seems the supply of a lot of devices (leaded) are low (are we sur

The 2N2219 is physically bigger same Die inside so yes, you can use either. I specified the smaller can 2n2222A as most would be easily bothered by large transistor and small space. Neither case heat

And all of it is in the wiki... and the world longest thread as well. Allison --------------------------------- No direct email, it goes to bit bucket due address harvesting in groups.IO