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Is it Playschool or Fisher Price that makes the Delta M2?

Merry Christmas to all.....

I by habit install chokes at the feed points of antennas including the Gainmaster to reduce common mode on the feedline. Being that the Gainmaster already has a built in choke as part of the design, it would seem that an added choke at the feed point would either be doing nothing if the...

This model

Being that the Sirio 2016 has more yet shorter radials, is there any chance this design is using the braid of the coax as part of the ground plane? If the answer is yes, then would it not be recommended to put a common mode choke at the feed point of the antenna, even though it is mounted to...

Included photos of filter in question and specifications of said filter. Here is the issue. The issue appears on 2 different antennas, but I will use the Sirio Gainmaster antenna for the example of the issue. Keep in mind I tested the common mode filter into a dummy load and the SWR is 1:1 so...

With a Ranger radio with a variable low to high power control on radio, when you adjust the high the power control on board ( VR-15 ) if you set the radio variable knob fully clockwise, and adjust the high power control (VR-15) for a lower dead key, does it drop the dead key and AM peak...

Recently installed a Sirio Gainmaster 64 wave. Just got hit with 70-75mph winds and hung in like a champ. Bent far over in the wind but did not snap.I believe and always have that it's assembly error that causes the first to second section breaks. May be 2nd section not inserted deep enough...

Insertion loss is very low in high quality low pass filters in the range of .1 -.2 db insertion loss at operating frequencies. Jumpers with pl259s, antenna switches, barrel connectors, swr and power meters,, etc also have insertion loss yet we all use those. You also have insertion loss with...

Whatever.....after 4 years and counting non stop hacking on the last guy, let's have a black out on the current guy! Sooooooo Funnnnnnyyyy

I have always done this by habit it the past but technically why on a broad band amplifier?

I always by habit run a quality low pass filter after amplifiers due to being in an urban environment to be neighbor friendly just in case. With a modern HF radio (not a CB or Import radio) is there any reason to run one prior to the amplifier or is the harmonic suppression sufficient from...

Conditions are so good tonight with the band scope lighting up, up and down the band. It's like 1972 tonight....

Purchased a used but very clean AL-80p and the unit has what looks like nice professional tags under the meters that say. Under one meter it is tagged: IG 150ma IP 400ma Are these max settings to stay at or below? Under other meter it is tagged: ALC140 ( have no idea about this one) Been...

Then best not to hook up the ALC?

Don't know why they would but in other amplification of old, tubes had a different audio response then transistors. Maybe it makes no difference in RF amplification

Any reason to use the ALC hookup from amp to a modern day radio if the radio will not be driving at full output of 100 watts, but at reduced wattage?

How pricey was his repairs. Sometimes repairs seem to equal to buying new or a quality used.

What model Ameritron?

Many of the AL-80B amplifies for sale had been manufactured in the 1990's. Seems to be to much of a risk unless they have been gone over, caps replaced etc. Am I correct? Is it a big risk if it that old without of history of being gone through?