Percentage of modulation
Another tuning question: In the factory manual for the cobra 29 ltd it states when tuning transmitter: TX mode/ 80% modulation My question is, I am using an audio generator to send the 1 kHz tone to...
View Article12TUBE D&A PHANTOM 500 SCHEMATICS
I NEED TO KNOW WHERE I CAN FIND A SCHEMATIC FOR A 12TUBE PHANTOM 500.
View ArticleCobra 89xlr
i have a cobra 89xlr I purchased but when I key up my rf sig meter moves to the left instead of to the right but no output power on my watt meter.
View ArticleMegaWatt vs. Chinese Imitation 30 amp switching power supply comparison
In an earlier thread about the various switching power supplies available on Amazon, there were questions posted about the difference between the authentic American made MegaWatt 30 amp supply and the...
View ArticleWhats the verdict on the Magnum 1?
I was thinking about trying one, but there isn't much info to be found. Does anyone actually have one?
View Article3600 board mod
I pulled off the cover and this is what I found, does anybody have an idea what this person was trying to do? He took the time to put hear shrink on it and never heated it. View attachment 20142 View...
View ArticleWhat does an MRI cost?
Title says it all. I injured my right knee late last summer. I put off going to the dr. because just like all my other ailments and injuries of the past 53 years it would get better on its own. After...
View ArticleStryker SR-89MC
Has anyone ran one of these yet? I don't see much in terms of testimonials on them and I was considering getting one for my Toyota Tacoma since it lacks any room to put a larger chassis CB in. Thanks...
View ArticleWIRELESS SECURITY CAMERA SYSTEM
I own a rental property on Staten Island. I'm currently renting to family members. I stayed there on the weekend of the snowfall. I was the first one out and noticed someone left footprints in the snow...
View ArticleAnyone know about the POWER MAX 100 amp power supply?
I was given a POWER MAX 100 amp dc power supply. The POWER MAX has 4, 40 amp fusses, and a fan. My friend is not a radio guy and got it in a triad some place. I was thinking of useing it with my dx500...
View Articlepresident grant mobile
My grant the volume drop's down but I can key the mike it comes back up then drop's back down in a few second's key the mike back up. anybody have any idea what the problem would be. The volume doesn't...
View ArticleGalaxy 99v2 drift or no drift on SSB?
Looking at getting a radio with sideband that will fit in the cubby hole of a 2015 Freightliner Coronado. I think the 99v2 will fit. I like it's power output, just wondering if these are better then...
View ArticleHome wiring experts - need help, questions on wiring and code
Non-radio wiring question for those who know 110v electrical code - really appreciate any help to know if I did this whole thing to code or the right way for that matter. So I consider myself pretty...
View ArticleOptima MK3
I have an Optima MK3 that I ordered from coldfrontsales on 1-30-16. I opened it to change the mode, and nothing else was touched. I also drilled the hole over the mic, but other than that it hasn't...
View ArticleScopes on HF Rigs
Can someone explain the function of spectrum and audio scopes? And for those of you who have them, do you consider them a necessity or a luxury? Entry level units don't have them and am wondering if it...
View ArticleMOSFET conversions for upD858 and MB8719 boards
After doing some research, and a lot of testing, I have successfully done conversions on the upD858 AM/SSB and MB8179 AM/SSB chassis. For these conversions, I used IRF520N's from International...
View ArticleExport/10 meter radio with good receive and static rejection?
I love my Lincoln II, but it doesn't reject static very well. When driving around I will sometimes get 10 DB of pure electrical noise. I understand some of it can't be avoided, but a lot of it can be...
View ArticleModding PLL UPD858 in Midland 77-883
Hey everyone I'm trying to modify a new radio. It's a Midland 77-883 AM only radio. PCB is marked as PC-152AC. It has an 858 PLL which I was really looking forward to modding until I ran into a few...
View ArticlePalomar 300 6 tube amp. This amp has band selector.
Transformer missing, need voltages for the outboard transformer supply to build.This amp is running 4 6 KD6's, Drivers are 6JF6, 2 of them. If someone has a schematic, I would be over-joyed to have...
View ArticleHR2510 issue
Hi Rich here, I picked up a 2510 that was sold not working. It actually works, but it has a strange issue. The 2510 has bands A through I, ABCD don't work. It does Rx and Tx, but in the vicinity of...
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